From 0e2c978ef2248156f36db7fcda8c7b67998ec58a Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 2 Nov 2011 18:08:25 -0400 Subject: [PATCH] drm/radeon/kms: don't poll forever if MC GDDR link training fails Bail if we hit the timeout limit. Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/ni.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 56afaff6299a..722cfb398992 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -261,8 +261,11 @@ int ni_mc_load_microcode(struct radeon_device *rdev) WREG32(MC_SEQ_SUP_CNTL, 0x00000001); /* wait for training to complete */ - while (!(RREG32(MC_IO_PAD_CNTL_D0) & MEM_FALL_OUT_CMD)) - udelay(10); + for (i = 0; i < rdev->usec_timeout; i++) { + if (RREG32(MC_IO_PAD_CNTL_D0) & MEM_FALL_OUT_CMD) + break; + udelay(1); + } if (running) WREG32(MC_SHARED_BLACKOUT_CNTL, blackout);