On Fri, Apr 1, 2011 at 1:12 AM, 'Liu Yuan <namei.unix at gmail.com> wrote:
> From: Liu Yuan <tailai.ly at taobao.com>
>
> In the function atom_op_delay() of drivers/gpu/drm/radeon/atom.c,
> the comparison performed in the udelay() is always false due to
> that the unsigned-char is compared to an integer 20000.
>
nack. the delay count is only an 8 bit field.
Alex
> Signed-off-by: Liu Yuan <tailai.ly at taobao.com>
> ---
> ?drivers/gpu/drm/radeon/atom.c | ? ?2 +-
> ?1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
> index 258fa5e..e248211 100644
> --- a/drivers/gpu/drm/radeon/atom.c
> +++ b/drivers/gpu/drm/radeon/atom.c
> @@ -648,7 +648,7 @@ static void atom_op_compare(atom_exec_context *ctx, int
> *ptr, int arg)
>
> ?static void atom_op_delay(atom_exec_context *ctx, int *ptr, int arg)
> ?{
> - ? ? ? uint8_t count = U8((*ptr)++);
> + ? ? ? uint32_t count = U32((*ptr)++);
> ? ? ? ?SDEBUG(" ? count: %d\n", count);
> ? ? ? ?if (arg == ATOM_UNIT_MICROSEC)
> ? ? ? ? ? ? ? ?udelay(count);
> --
> 1.7.1
>
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