diff mbox series

mtd: rawnand: silence static checker warning in nand_setup_interface()

Message ID YH6Ugwz3gcga+q8X@mwanda
State Accepted
Headers show
Series mtd: rawnand: silence static checker warning in nand_setup_interface() | expand

Commit Message

Dan Carpenter April 20, 2021, 8:44 a.m. UTC
Smatch complains that the error code is not set on this error path:

    drivers/mtd/nand/raw/nand_base.c:842 nand_setup_interface()
    warn: missing error code 'ret'

But actually returning success is intentional because the NAND chip will
still work in mode 0.  This patch adds a "ret = 0;" assignment to make
the intent more clear and to silence the static checker warning.  It
doesn't affect the compiled code because GCC optimises the assignment
away.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/mtd/nand/raw/nand_base.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Miquel Raynal May 10, 2021, 10:02 a.m. UTC | #1
On Tue, 2021-04-20 at 08:44:51 UTC, Dan Carpenter wrote:
> Smatch complains that the error code is not set on this error path:
> 
>     drivers/mtd/nand/raw/nand_base.c:842 nand_setup_interface()
>     warn: missing error code 'ret'
> 
> But actually returning success is intentional because the NAND chip will
> still work in mode 0.  This patch adds a "ret = 0;" assignment to make
> the intent more clear and to silence the static checker warning.  It
> doesn't affect the compiled code because GCC optimises the assignment
> away.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks.

Miquel
diff mbox series

Patch

diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index fb072c444495..e29e5b3d31bf 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -880,6 +880,7 @@  static int nand_setup_interface(struct nand_chip *chip, int chipnr)
 	if (tmode_param[0] != chip->best_interface_config->timings.mode) {
 		pr_warn("timing mode %d not acknowledged by the NAND chip\n",
 			chip->best_interface_config->timings.mode);
+		ret = 0;
 		goto err_reset_chip;
 	}