commit: b7f5b7dec3d539a84734f2bcb7e53fbb1532a40b From: Alex Deucher <[email protected]> Date: Mon, 13 Feb 2012 16:36:34 -0500 Subject: drm/radeon/kms: fix MSI re-arm on rv370+
MSI_REARM_EN register is a write only trigger register. There is no need RMW when re-arming. May fix: https://bugs.freedesktop.org/show_bug.cgi?id=41668 Signed-off-by: Alex Deucher <[email protected]> CC: [email protected] Signed-off-by: Dave Airlie <[email protected]> --- drivers/gpu/drm/radeon/r100.c | 4 +--- drivers/gpu/drm/radeon/rs600.c | 4 +--- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c index bfd36ab..18cd84f 100644 --- a/drivers/gpu/drm/radeon/r100.c +++ b/drivers/gpu/drm/radeon/r100.c @@ -789,9 +789,7 @@ int r100_irq_process(struct radeon_device *rdev) WREG32(RADEON_AIC_CNTL, msi_rearm | RS400_MSI_REARM); break; default: - msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN; - WREG32(RADEON_MSI_REARM_EN, msi_rearm); - WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN); + WREG32(RADEON_MSI_REARM_EN, RV370_MSI_REARM_EN); break; } } diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c index ec46eb4..c05865e 100644 --- a/drivers/gpu/drm/radeon/rs600.c +++ b/drivers/gpu/drm/radeon/rs600.c @@ -684,9 +684,7 @@ int rs600_irq_process(struct radeon_device *rdev) WREG32(RADEON_BUS_CNTL, msi_rearm | RS600_MSI_REARM); break; default: - msi_rearm = RREG32(RADEON_MSI_REARM_EN) & ~RV370_MSI_REARM_EN; - WREG32(RADEON_MSI_REARM_EN, msi_rearm); - WREG32(RADEON_MSI_REARM_EN, msi_rearm | RV370_MSI_REARM_EN); + WREG32(RADEON_MSI_REARM_EN, RV370_MSI_REARM_EN); break; } } -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
