RE: radeon -Wmaybe-uninitialized crap

From: Deucher, Alexander
Date: Mon Dec 07 2015 - 11:48:18 EST




> -----Original Message-----
> From: Borislav Petkov [mailto:bp@xxxxxxxxx]
> Sent: Monday, December 07, 2015 3:56 AM
> To: Deucher, Alexander; Koenig, Christian
> Cc: lkml
> Subject: radeon -Wmaybe-uninitialized crap
>
> Hi guys,
>
> this just started appearing when building -rc4. Got fixes yet? :-)

Odd. Nothing related to these variables has changed in years.

Alex

>
> In file included from drivers/gpu/drm/radeon/radeon_mode.h:37:0,
> from drivers/gpu/drm/radeon/radeon.h:80,
> from drivers/gpu/drm/radeon/r100.c:33:
> drivers/gpu/drm/radeon/r100.c: In function âr100_bandwidth_updateâ:
> include/drm/drm_fixed.h:64:13: warning: âcrit_point_ff.fullâ may be used
> uninitialized in this function [-Wmaybe-uninitialized]
> u64 tmp = ((u64)A.full << 13);
> ^
> drivers/gpu/drm/radeon/r100.c:3153:63: note: âcrit_point_ff.fullâ was
> declared here
> fixed20_12 peak_disp_bw, mem_bw, pix_clk, pix_clk2, temp_ff,
> crit_point_ff;
> ^
> drivers/gpu/drm/radeon/r100.c:3583:42: warning: âdisp_drain_rate.fullâ may
> be used uninitialized in this function [-Wmaybe-uninitialized]
> temp_ff.full = read_return_rate.full - disp_drain_rate.full;
> ^
> --
> Regards/Gruss,
> Boris.
>
> ECO tip #101: Trim your mails when you reply.