kernel: backport bcm47xxpart changes queued for 3.19
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43223 3c298f89-4303-0410-b956-a3cf2f4a3e73master
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From 6b833541d73894b5afd40d69949f8f6099db2abf Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Thu, 2 Oct 2014 11:33:40 +0200
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Subject: [PATCH] mtd: bcm47xxpart: alloc memory for more partitions
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This is needed for some new Netgear devices (e.g. R6250).
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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---
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drivers/mtd/bcm47xxpart.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -15,8 +15,12 @@
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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-/* 10 parts were found on sflash on Netgear WNDR4500 */
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-#define BCM47XXPART_MAX_PARTS 12
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+/*
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+ * NAND flash on Netgear R6250 was verified to contain 15 partitions.
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+ * This will result in allocating too big array for some old devices, but the
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+ * memory will be freed soon anyway (see mtd_device_parse_register).
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+ */
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+#define BCM47XXPART_MAX_PARTS 20
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/*
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* Amount of bytes we read when analyzing each block of flash memory.
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@ -1,32 +0,0 @@
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From 6b833541d73894b5afd40d69949f8f6099db2abf Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
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Date: Thu, 2 Oct 2014 11:33:40 +0200
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Subject: [PATCH] mtd: bcm47xxpart: alloc memory for more partitions
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This is needed for some new Netgear devices (e.g. R6250).
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Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
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---
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drivers/mtd/bcm47xxpart.c | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -15,8 +15,12 @@
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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-/* 10 parts were found on sflash on Netgear WNDR4500 */
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-#define BCM47XXPART_MAX_PARTS 12
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+/*
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+ * NAND flash on Netgear R6250 was verified to contain 15 partitions.
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+ * This will result in allocating too big array for some old devices, but the
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+ * memory will be freed soon anyway (see mtd_device_parse_register).
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+ */
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+#define BCM47XXPART_MAX_PARTS 20
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/*
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* Amount of bytes we read when analyzing each block of flash memory.
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@ -0,0 +1,50 @@
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -15,8 +15,12 @@
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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-/* 10 parts were found on sflash on Netgear WNDR4500 */
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-#define BCM47XXPART_MAX_PARTS 12
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+/*
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+ * NAND flash on Netgear R6250 was verified to contain 15 partitions.
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+ * This will result in allocating too big array for some old devices, but the
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+ * memory will be freed soon anyway (see mtd_device_parse_register).
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+ */
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+#define BCM47XXPART_MAX_PARTS 20
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/*
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* Amount of bytes we read when analyzing each block of flash memory.
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@@ -168,18 +172,26 @@ static int bcm47xxpart_parse(struct mtd_
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i++;
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}
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- bcm47xxpart_add_part(&parts[curr_part++], "linux",
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- offset + trx->offset[i], 0);
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- i++;
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+ if (trx->offset[i]) {
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+ bcm47xxpart_add_part(&parts[curr_part++],
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+ "linux",
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+ offset + trx->offset[i],
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+ 0);
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+ i++;
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+ }
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/*
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* Pure rootfs size is known and can be calculated as:
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* trx->length - trx->offset[i]. We don't fill it as
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* we want to have jffs2 (overlay) in the same mtd.
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*/
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- bcm47xxpart_add_part(&parts[curr_part++], "rootfs",
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- offset + trx->offset[i], 0);
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- i++;
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+ if (trx->offset[i]) {
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+ bcm47xxpart_add_part(&parts[curr_part++],
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+ "rootfs",
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+ offset + trx->offset[i],
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+ 0);
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+ i++;
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+ }
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last_trx_part = curr_part - 1;
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@ -1,6 +1,6 @@
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -36,6 +36,7 @@
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@@ -40,6 +40,7 @@
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#define ML_MAGIC2 0x26594131
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#define TRX_MAGIC 0x30524448
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#define SQSH_MAGIC 0x71736873 /* shsq */
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@ -8,7 +8,7 @@
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struct trx_header {
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uint32_t magic;
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@@ -46,7 +47,7 @@ struct trx_header {
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@@ -50,7 +51,7 @@ struct trx_header {
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uint32_t offset[3];
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} __packed;
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@ -17,7 +17,7 @@
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u64 offset, uint32_t mask_flags)
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{
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part->name = name;
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@@ -54,6 +55,26 @@ static void bcm47xxpart_add_part(struct
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@@ -58,6 +59,26 @@ static void bcm47xxpart_add_part(struct
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part->mask_flags = mask_flags;
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}
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@ -44,7 +44,7 @@
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static int bcm47xxpart_parse(struct mtd_info *master,
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struct mtd_partition **pparts,
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struct mtd_part_parser_data *data)
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@@ -147,6 +168,8 @@ static int bcm47xxpart_parse(struct mtd_
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@@ -151,6 +172,8 @@ static int bcm47xxpart_parse(struct mtd_
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/* TRX */
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if (buf[0x000 / 4] == TRX_MAGIC) {
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@ -53,14 +53,14 @@
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if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
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pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
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break;
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@@ -177,7 +200,9 @@ static int bcm47xxpart_parse(struct mtd_
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* trx->length - trx->offset[i]. We don't fill it as
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@@ -186,8 +209,9 @@ static int bcm47xxpart_parse(struct mtd_
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* we want to have jffs2 (overlay) in the same mtd.
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*/
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- bcm47xxpart_add_part(&parts[curr_part++], "rootfs",
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+ name = bcm47xxpart_trx_data_part_name(master,
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+ offset + trx->offset[i]);
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+ bcm47xxpart_add_part(&parts[curr_part++], name,
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offset + trx->offset[i], 0);
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i++;
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if (trx->offset[i]) {
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+ name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
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bcm47xxpart_add_part(&parts[curr_part++],
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- "rootfs",
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+ name,
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offset + trx->offset[i],
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0);
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i++;
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@ -0,0 +1,50 @@
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -15,8 +15,12 @@
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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-/* 10 parts were found on sflash on Netgear WNDR4500 */
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-#define BCM47XXPART_MAX_PARTS 12
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+/*
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+ * NAND flash on Netgear R6250 was verified to contain 15 partitions.
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+ * This will result in allocating too big array for some old devices, but the
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+ * memory will be freed soon anyway (see mtd_device_parse_register).
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+ */
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+#define BCM47XXPART_MAX_PARTS 20
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/*
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* Amount of bytes we read when analyzing each block of flash memory.
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@@ -168,18 +172,26 @@ static int bcm47xxpart_parse(struct mtd_
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i++;
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}
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- bcm47xxpart_add_part(&parts[curr_part++], "linux",
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- offset + trx->offset[i], 0);
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- i++;
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+ if (trx->offset[i]) {
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+ bcm47xxpart_add_part(&parts[curr_part++],
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+ "linux",
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+ offset + trx->offset[i],
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+ 0);
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+ i++;
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+ }
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/*
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* Pure rootfs size is known and can be calculated as:
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* trx->length - trx->offset[i]. We don't fill it as
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* we want to have jffs2 (overlay) in the same mtd.
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*/
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- bcm47xxpart_add_part(&parts[curr_part++], "rootfs",
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- offset + trx->offset[i], 0);
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- i++;
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+ if (trx->offset[i]) {
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+ bcm47xxpart_add_part(&parts[curr_part++],
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+ "rootfs",
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+ offset + trx->offset[i],
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+ 0);
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+ i++;
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+ }
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last_trx_part = curr_part - 1;
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@ -1,6 +1,6 @@
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--- a/drivers/mtd/bcm47xxpart.c
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+++ b/drivers/mtd/bcm47xxpart.c
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@@ -36,6 +36,7 @@
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@@ -40,6 +40,7 @@
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#define ML_MAGIC2 0x26594131
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#define TRX_MAGIC 0x30524448
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#define SQSH_MAGIC 0x71736873 /* shsq */
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@ -8,7 +8,7 @@
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struct trx_header {
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uint32_t magic;
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@@ -46,7 +47,7 @@ struct trx_header {
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@@ -50,7 +51,7 @@ struct trx_header {
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uint32_t offset[3];
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} __packed;
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@ -17,7 +17,7 @@
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u64 offset, uint32_t mask_flags)
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{
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part->name = name;
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@@ -54,6 +55,26 @@ static void bcm47xxpart_add_part(struct
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@@ -58,6 +59,26 @@ static void bcm47xxpart_add_part(struct
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part->mask_flags = mask_flags;
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}
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@ -44,7 +44,7 @@
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static int bcm47xxpart_parse(struct mtd_info *master,
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struct mtd_partition **pparts,
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struct mtd_part_parser_data *data)
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@@ -147,6 +168,8 @@ static int bcm47xxpart_parse(struct mtd_
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@@ -151,6 +172,8 @@ static int bcm47xxpart_parse(struct mtd_
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/* TRX */
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if (buf[0x000 / 4] == TRX_MAGIC) {
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@ -53,14 +53,14 @@
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if (BCM47XXPART_MAX_PARTS - curr_part < 4) {
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pr_warn("Not enough partitions left to register trx, scanning stopped!\n");
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break;
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@@ -177,7 +200,9 @@ static int bcm47xxpart_parse(struct mtd_
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* trx->length - trx->offset[i]. We don't fill it as
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@@ -186,8 +209,9 @@ static int bcm47xxpart_parse(struct mtd_
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* we want to have jffs2 (overlay) in the same mtd.
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*/
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- bcm47xxpart_add_part(&parts[curr_part++], "rootfs",
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+ name = bcm47xxpart_trx_data_part_name(master,
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+ offset + trx->offset[i]);
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+ bcm47xxpart_add_part(&parts[curr_part++], name,
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offset + trx->offset[i], 0);
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i++;
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if (trx->offset[i]) {
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+ name = bcm47xxpart_trx_data_part_name(master, offset + trx->offset[i]);
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bcm47xxpart_add_part(&parts[curr_part++],
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- "rootfs",
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+ name,
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offset + trx->offset[i],
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0);
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i++;
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