diff options
| author |   Jani Nikula <jani.nikula@intel.com> | 2022-05-18 14:33:14 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2022-05-19 12:50:29 +0300 |
| commit | 416e07a84f6ed883e0abd68c2fb868c80eea887b (patch) | |
| tree | 057a7670985fbf3a014ee88c3c900939199be0b7 /drivers/gpu/drm/i915 | |
| parent | drm/i915/gt: Fix use of static in macro mismatch (diff) | |
| download | linux-dev-416e07a84f6ed883e0abd68c2fb868c80eea887b.tar.xz linux-dev-416e07a84f6ed883e0abd68c2fb868c80eea887b.zip | |
drm/i915/reg: fix undefined behavior due to shift overflowing the constant
Use REG_GENMASK() and REG_FIELD_PREP() to avoid errors due to
-fsanitize=shift.
References: https://lore.kernel.org/r/20220405151517.29753-12-bp@alien8.de
Reported-by: Borislav Petkov <bp@suse.de>
Reported-by: Ruiqi GONG <gongruiqi1@huawei.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220518113315.1305027-1-jani.nikula@intel.com
(cherry picked from commit 230fb39ff7e07bd0324c87acf08dd2c9b0bbcea8)
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 9ccb67eec1bd..4f5a51bb9e1e 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7561,25 +7561,25 @@ enum skl_power_gate { #define _PORT_CLK_SEL_A 0x46100 #define _PORT_CLK_SEL_B 0x46104 #define PORT_CLK_SEL(port) _MMIO_PORT(port, _PORT_CLK_SEL_A, _PORT_CLK_SEL_B) -#define PORT_CLK_SEL_LCPLL_2700 (0 << 29) -#define PORT_CLK_SEL_LCPLL_1350 (1 << 29) -#define PORT_CLK_SEL_LCPLL_810 (2 << 29) -#define PORT_CLK_SEL_SPLL (3 << 29) -#define PORT_CLK_SEL_WRPLL(pll) (((pll) + 4) << 29) -#define PORT_CLK_SEL_WRPLL1 (4 << 29) -#define PORT_CLK_SEL_WRPLL2 (5 << 29) -#define PORT_CLK_SEL_NONE (7 << 29) -#define PORT_CLK_SEL_MASK (7 << 29) +#define PORT_CLK_SEL_MASK REG_GENMASK(31, 29) +#define PORT_CLK_SEL_LCPLL_2700 REG_FIELD_PREP(PORT_CLK_SEL_MASK, 0) +#define PORT_CLK_SEL_LCPLL_1350 REG_FIELD_PREP(PORT_CLK_SEL_MASK, 1) +#define PORT_CLK_SEL_LCPLL_810 REG_FIELD_PREP(PORT_CLK_SEL_MASK, 2) +#define PORT_CLK_SEL_SPLL REG_FIELD_PREP(PORT_CLK_SEL_MASK, 3) +#define PORT_CLK_SEL_WRPLL(pll) REG_FIELD_PREP(PORT_CLK_SEL_MASK, 4 + (pll)) +#define PORT_CLK_SEL_WRPLL1 REG_FIELD_PREP(PORT_CLK_SEL_MASK, 4) +#define PORT_CLK_SEL_WRPLL2 REG_FIELD_PREP(PORT_CLK_SEL_MASK, 5) +#define PORT_CLK_SEL_NONE REG_FIELD_PREP(PORT_CLK_SEL_MASK, 7) /* On ICL+ this is the same as PORT_CLK_SEL, but all bits change. */ #define DDI_CLK_SEL(port) PORT_CLK_SEL(port) -#define DDI_CLK_SEL_NONE (0x0 << 28) -#define DDI_CLK_SEL_MG (0x8 << 28) -#define DDI_CLK_SEL_TBT_162 (0xC << 28) -#define DDI_CLK_SEL_TBT_270 (0xD << 28) -#define DDI_CLK_SEL_TBT_540 (0xE << 28) -#define DDI_CLK_SEL_TBT_810 (0xF << 28) -#define DDI_CLK_SEL_MASK (0xF << 28) +#define DDI_CLK_SEL_MASK REG_GENMASK(31, 28) +#define DDI_CLK_SEL_NONE REG_FIELD_PREP(DDI_CLK_SEL_MASK, 0x0) +#define DDI_CLK_SEL_MG REG_FIELD_PREP(DDI_CLK_SEL_MASK, 0x8) +#define DDI_CLK_SEL_TBT_162 REG_FIELD_PREP(DDI_CLK_SEL_MASK, 0xC) +#define DDI_CLK_SEL_TBT_270 REG_FIELD_PREP(DDI_CLK_SEL_MASK, 0xD) +#define DDI_CLK_SEL_TBT_540 REG_FIELD_PREP(DDI_CLK_SEL_MASK, 0xE) +#define DDI_CLK_SEL_TBT_810 REG_FIELD_PREP(DDI_CLK_SEL_MASK, 0xF) /* Transcoder clock selection */ #define _TRANS_CLK_SEL_A 0x46140 |