* [PATCH] commands: mm: don't ignore pread() errors for larger access sizes
@ 2022-09-02 10:04 Ahmad Fatoum
2022-09-12 10:14 ` Sascha Hauer
0 siblings, 1 reply; 2+ messages in thread
From: Ahmad Fatoum @ 2022-09-02 10:04 UTC (permalink / raw)
To: barebox; +Cc: Ahmad Fatoum
Error check was before pread was called and because ret was initialized,
compiler didn't warn about it. Fix this.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
commands/mm.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/commands/mm.c b/commands/mm.c
index 9ce883964485..8fe87a80a18e 100644
--- a/commands/mm.c
+++ b/commands/mm.c
@@ -16,7 +16,7 @@
static int do_mem_mm(int argc, char *argv[])
{
- int ret = 0;
+ int ret;
int fd;
char *filename = "/dev/mem";
int mode = O_RWSIZE_4;
@@ -65,9 +65,9 @@ static int do_mem_mm(int argc, char *argv[])
goto out_write;
break;
case O_RWSIZE_4:
+ ret = pread(fd, &val32, 4, adr);
if (ret < 0)
goto out_read;
- ret = pread(fd, &val32, 4, adr);
val32 &= ~mask;
val32 |= (value & mask);
ret = pwrite(fd, &val32, 4, adr);
@@ -75,9 +75,9 @@ static int do_mem_mm(int argc, char *argv[])
goto out_write;
break;
case O_RWSIZE_8:
+ ret = pread(fd, &val64, 8, adr);
if (ret < 0)
goto out_read;
- ret = pread(fd, &val64, 8, adr);
val64 &= ~mask;
val64 |= (value & mask);
ret = pwrite(fd, &val64, 8, adr);
--
2.30.2
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] commands: mm: don't ignore pread() errors for larger access sizes
2022-09-02 10:04 [PATCH] commands: mm: don't ignore pread() errors for larger access sizes Ahmad Fatoum
@ 2022-09-12 10:14 ` Sascha Hauer
0 siblings, 0 replies; 2+ messages in thread
From: Sascha Hauer @ 2022-09-12 10:14 UTC (permalink / raw)
To: Ahmad Fatoum; +Cc: barebox
On Fri, Sep 02, 2022 at 12:04:58PM +0200, Ahmad Fatoum wrote:
> Error check was before pread was called and because ret was initialized,
> compiler didn't warn about it. Fix this.
>
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
> commands/mm.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
Applied, thanks
Sascha
>
> diff --git a/commands/mm.c b/commands/mm.c
> index 9ce883964485..8fe87a80a18e 100644
> --- a/commands/mm.c
> +++ b/commands/mm.c
> @@ -16,7 +16,7 @@
>
> static int do_mem_mm(int argc, char *argv[])
> {
> - int ret = 0;
> + int ret;
> int fd;
> char *filename = "/dev/mem";
> int mode = O_RWSIZE_4;
> @@ -65,9 +65,9 @@ static int do_mem_mm(int argc, char *argv[])
> goto out_write;
> break;
> case O_RWSIZE_4:
> + ret = pread(fd, &val32, 4, adr);
> if (ret < 0)
> goto out_read;
> - ret = pread(fd, &val32, 4, adr);
> val32 &= ~mask;
> val32 |= (value & mask);
> ret = pwrite(fd, &val32, 4, adr);
> @@ -75,9 +75,9 @@ static int do_mem_mm(int argc, char *argv[])
> goto out_write;
> break;
> case O_RWSIZE_8:
> + ret = pread(fd, &val64, 8, adr);
> if (ret < 0)
> goto out_read;
> - ret = pread(fd, &val64, 8, adr);
> val64 &= ~mask;
> val64 |= (value & mask);
> ret = pwrite(fd, &val64, 8, adr);
> --
> 2.30.2
>
>
>
--
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