From 230fb39ff7e07bd0324c87acf08dd2c9b0bbcea8 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Wed, 18 May 2022 14:33:14 +0300 Subject: [PATCH] drm/i915/reg: fix undefined behavior due to shift overflowing the constant MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reported-by: Ruiqi GONG Cc: Randy Dunlap Signed-off-by: Jani Nikula Reviewed-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220518113315.1305027-1-jani.nikula@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 32 ++++++++++++++++---------------- 1 file changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c997bd6..9ad5938 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7546,25 +7546,25 @@ 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 -- 2.7.4