From 1089380245c71ed734ed0eab0129aaebbf9175b2 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 13 Apr 2012 11:14:50 +0100 Subject: [PATCH] drm/radeon: disable MSI on RV515 BugLink: http://bugs.launchpad.net/bugs/987337 commit 16a5e32b83fd946312b9b13590c75d20c95c5202 upstream. My rv515 card is very flaky with msi enabled. Every so often it loses a rearm and never comes back, manually banging the rearm brings it back. Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie Signed-off-by: Greg Kroah-Hartman Signed-off-by: Tim Gardner --- drivers/gpu/drm/radeon/radeon_irq_kms.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index e7ddb49..baa019e 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -143,6 +143,12 @@ static bool radeon_msi_ok(struct radeon_device *rdev) (rdev->pdev->subsystem_device == 0x01fd)) return true; + /* RV515 seems to have MSI issues where it loses + * MSI rearms occasionally. This leads to lockups and freezes. + * disable it by default. + */ + if (rdev->family == CHIP_RV515) + return false; if (rdev->flags & RADEON_IS_IGP) { /* APUs work fine with MSIs */ if (rdev->family >= CHIP_PALM) -- 1.7.10.4