diff options
Diffstat (limited to 'meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4857-drm-amd-display-dc-dce-Fix-multiple-potential-intege.patch')
| -rw-r--r-- | meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4857-drm-amd-display-dc-dce-Fix-multiple-potential-intege.patch | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4857-drm-amd-display-dc-dce-Fix-multiple-potential-intege.patch b/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4857-drm-amd-display-dc-dce-Fix-multiple-potential-intege.patch deleted file mode 100644 index a4216c60..00000000 --- a/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/4857-drm-amd-display-dc-dce-Fix-multiple-potential-intege.patch +++ /dev/null @@ -1,70 +0,0 @@ -From 1f5b35820dc07720fdd328e6d434ff1b5c243514 Mon Sep 17 00:00:00 2001 -From: "Gustavo A. R. Silva" <gustavo@embeddedor.com> -Date: Wed, 4 Jul 2018 08:22:11 -0500 -Subject: [PATCH 4857/5725] drm/amd/display/dc/dce: Fix multiple potential - integer overflows - -Add suffix ULL to constant 5 and cast variables target_pix_clk_khz and -feedback_divider to uint64_t in order to avoid multiple potential integer -overflows and give the compiler complete information about the proper -arithmetic to use. - -Notice that such constant and variables are used in contexts that -expect expressions of type uint64_t (64 bits, unsigned). The current -casts to uint64_t effectively apply to each expression as a whole, -but they do not prevent them from being evaluated using 32-bit -arithmetic instead of 64-bit arithmetic. - -Also, once the expressions are properly evaluated using 64-bit -arithmentic, there is no need for the parentheses that enclose -them. - -Addresses-Coverity-ID: 1460245 ("Unintentional integer overflow") -Addresses-Coverity-ID: 1460286 ("Unintentional integer overflow") -Addresses-Coverity-ID: 1460401 ("Unintentional integer overflow") -Fixes: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)") -Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> -Reviewed-by: Harry Wentland <harry.wentland@amd.com> -Signed-off-by: Alex Deucher <alexander.deucher@amd.com> ---- - drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c | 10 +++++----- - 1 file changed, 5 insertions(+), 5 deletions(-) - -diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c -index 599c7ab..f72f331 100644 ---- a/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c -+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_clock_source.c -@@ -133,7 +133,7 @@ static bool calculate_fb_and_fractional_fb_divider( - uint64_t feedback_divider; - - feedback_divider = -- (uint64_t)(target_pix_clk_khz * ref_divider * post_divider); -+ (uint64_t)target_pix_clk_khz * ref_divider * post_divider; - feedback_divider *= 10; - /* additional factor, since we divide by 10 afterwards */ - feedback_divider *= (uint64_t)(calc_pll_cs->fract_fb_divider_factor); -@@ -145,8 +145,8 @@ static bool calculate_fb_and_fractional_fb_divider( - * of fractional feedback decimal point and the fractional FB Divider precision - * is 2 then the equation becomes (ullfeedbackDivider + 5*100) / (10*100))*/ - -- feedback_divider += (uint64_t) -- (5 * calc_pll_cs->fract_fb_divider_precision_factor); -+ feedback_divider += 5ULL * -+ calc_pll_cs->fract_fb_divider_precision_factor; - feedback_divider = - div_u64(feedback_divider, - calc_pll_cs->fract_fb_divider_precision_factor * 10); -@@ -203,8 +203,8 @@ static bool calc_fb_divider_checking_tolerance( - &fract_feedback_divider); - - /*Actual calculated value*/ -- actual_calc_clk_khz = (uint64_t)(feedback_divider * -- calc_pll_cs->fract_fb_divider_factor) + -+ actual_calc_clk_khz = (uint64_t)feedback_divider * -+ calc_pll_cs->fract_fb_divider_factor + - fract_feedback_divider; - actual_calc_clk_khz *= calc_pll_cs->ref_freq_khz; - actual_calc_clk_khz = --- -2.7.4 - |