Re: [PATCH] staging: sm750fb: fix const pointer declaration

[Sai Madhu]

Hi Ahmet,

Thank you for the review.

I compiled the patch with CONFIG_FB_SM750 enabled and it fails
with the following errors:

sm750.c:773: error: assignment of read-only location 'g_fbmode[index]'
sm750.c:775: error: assignment of read-only location 'g_fbmode[index]'
sm750.c:884: error: assignment of read-only location 'g_fbmode[0]'
sm750.c:888: error: assignment of read-only location 'g_fbmode[1]'

The array elements are assigned at runtime in lynxfb_set_fbinfo()
and sm750fb_setup(), so making them const is incorrect.
The checkpatch warning is a false positive in this case.

I will drop this patch.

Regards,
suryasaimadhu

On Thu, 25 Jun 2026 at 12:58, Ahmet Sezgin Duran <ahmet@xxxxxxxxxxxxxxx> wrote:
>
> On 6/25/26 10:13 AM, suryasaimadhu wrote:
> > Make g_fbmode a constant pointer array by adding const qualifier
> > after the asterisk, as recommended by checkpatch.
> >
> > Signed-off-by: suryasaimadhu <suryasaimadhu369@xxxxxxxxx>
> > ---
> >   drivers/staging/sm750fb/sm750.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
> > index 89c811e08..8f533f3b1 100644
> > --- a/drivers/staging/sm750fb/sm750.c
> > +++ b/drivers/staging/sm750fb/sm750.c
> > @@ -21,7 +21,7 @@
> >   static int g_hwcursor = 1;
> >   static int g_noaccel __ro_after_init;
> >   static int g_nomtrr __ro_after_init;
> > -static const char *g_fbmode[] = {NULL, NULL};
> > +static const char * const g_fbmode[] = {NULL, NULL};
> >   static const char *g_def_fbmode = "1024x768-32@60";
> >   static char *g_settings;
> >   static int g_dualview __ro_after_init;
>
> Did you compile this patch while sm750fb module is enabled?
>
> Regards,
> Ahmet Sezgin Duran