mirror of https://github.com/hak5/openwrt-owl.git
57 lines
2.0 KiB
Diff
57 lines
2.0 KiB
Diff
From fb89852f9971a3d5f40be06e2d8017b9b9b56e19 Mon Sep 17 00:00:00 2001
|
|
From: Martin Sperl <kernel@martin.sperl.org>
|
|
Date: Tue, 12 May 2015 10:32:08 +0000
|
|
Subject: [PATCH 157/171] spi: bcm2835: fix kbuild compile warnings/errors and
|
|
a typo
|
|
|
|
fixes several warnings/error emmitted by the kbuild system:
|
|
* warn: cast from pointer to integer of different size
|
|
using size_t instead of u32
|
|
* error: 'SZ_4K' undeclared
|
|
moved to PAGE_SIZE and PAGE_MASK instead
|
|
|
|
Review showed also a typo in the same code where tx_buff
|
|
was checked twice instead of checking both rx and tx_buff.
|
|
|
|
Reported by: Stephen Rothwell <sfr@canb.auug.org.au>
|
|
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
|
|
Signed-off-by: Mark Brown <broonie@kernel.org>
|
|
(cherry picked from commit 7e52be0d576e8f7bc99a606f07b9d000c4340f04)
|
|
---
|
|
drivers/spi/spi-bcm2835.c | 8 +++++---
|
|
1 file changed, 5 insertions(+), 3 deletions(-)
|
|
|
|
--- a/drivers/spi/spi-bcm2835.c
|
|
+++ b/drivers/spi/spi-bcm2835.c
|
|
@@ -20,6 +20,7 @@
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
+#include <asm/page.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/delay.h>
|
|
@@ -378,18 +379,19 @@ static bool bcm2835_spi_can_dma(struct s
|
|
}
|
|
|
|
/* if we run rx/tx_buf with word aligned addresses then we are OK */
|
|
- if (((u32)tfr->tx_buf % 4 == 0) && ((u32)tfr->tx_buf % 4 == 0))
|
|
+ if ((((size_t)tfr->rx_buf & 3) == 0) &&
|
|
+ (((size_t)tfr->tx_buf & 3) == 0))
|
|
return true;
|
|
|
|
/* otherwise we only allow transfers within the same page
|
|
* to avoid wasting time on dma_mapping when it is not practical
|
|
*/
|
|
- if (((u32)tfr->tx_buf % SZ_4K) + tfr->len > SZ_4K) {
|
|
+ if (((size_t)tfr->tx_buf & PAGE_MASK) + tfr->len > PAGE_SIZE) {
|
|
dev_warn_once(&spi->dev,
|
|
"Unaligned spi tx-transfer bridging page\n");
|
|
return false;
|
|
}
|
|
- if (((u32)tfr->rx_buf % SZ_4K) + tfr->len > SZ_4K) {
|
|
+ if (((size_t)tfr->rx_buf & PAGE_MASK) + tfr->len > PAGE_SIZE) {
|
|
dev_warn_once(&spi->dev,
|
|
"Unaligned spi tx-transfer bridging page\n");
|
|
return false;
|