This is a note to let you know that I've just added the patch titled
spi: mpc5xxx-psc: Fix unsigned expression compared with zero
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-mpc5xxx-psc-fix-unsigned-expression-compared-wit.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6e7f4b13f381bde63bbf0c1f063037a159367c7a
Author: Li Zetao <lizetao1@xxxxxxxxxx>
Date: Thu Aug 3 21:48:05 2023 +0800
spi: mpc5xxx-psc: Fix unsigned expression compared with zero
[ Upstream commit de5e92cb5cefd2968b96075995a36e28298edf71 ]
There is two warnings reported by coccinelle:
./drivers/spi/spi-mpc512x-psc.c:493:5-13: WARNING:
Unsigned expression compared with zero: mps -> irq < 0
./drivers/spi/spi-mpc52xx-psc.c:332:5-13: WARNING:
Unsigned expression compared with zero: mps -> irq < 0
The commit "208ee586f862"
("spi: mpc5xxx-psc: Return immediately if IRQ resource is unavailable")
was to check whether the IRQ resource is unavailable. When the IRQ
resource is unavailable, an error code is returned, however, the type
of "mps->irq" is "unsigned int", causing the error code to flip. Modify
the type of "mps->irq" to solve this problem.
Fixes: 208ee586f862 ("spi: mpc5xxx-psc: Return immediately if IRQ resource is unavailable")
Signed-off-by: Li Zetao <lizetao1@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230803134805.1037251-1-lizetao1@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c
index 99aeef28a4774..5cecca1bef026 100644
--- a/drivers/spi/spi-mpc512x-psc.c
+++ b/drivers/spi/spi-mpc512x-psc.c
@@ -53,7 +53,7 @@ struct mpc512x_psc_spi {
int type;
void __iomem *psc;
struct mpc512x_psc_fifo __iomem *fifo;
- unsigned int irq;
+ int irq;
u8 bits_per_word;
u32 mclk_rate;
