Commit f957063f authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon: do a posting read in r100_set_irq 

To make sure the writes go through the pci bridge.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=90741



Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 2afa3265

drivers/gpu/drm/radeon/r100.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -728,6 +728,10 @@ int r100_irq_set(struct radeon_device *rdev) 
		tmp |= RADEON_FP2_DETECT_MASK;

		tmp |= RADEON_FP2_DETECT_MASK;

	}

	}

	WREG32(RADEON_GEN_INT_CNTL, tmp);

	WREG32(RADEON_GEN_INT_CNTL, tmp);



	/* read back to post the write */

	RREG32(RADEON_GEN_INT_CNTL);



	return 0;

	return 0;

}

}

CRA Git | Maintained and supported by SUSTech CRA and CCSE