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Date: Thu, 05 Jan 2012 14:30:48 -0800 From: Greg KH <gregkh@...e.de> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: torvalds@...ux-foundation.org, akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk, Alex Deucher <alexander.deucher@....com>, Dave Airlie <airlied@...hat.com> Subject: [75/80] drm/radeon/kms/atom: fix possible segfault in pm setup 3.1-stable review patch. If anyone has any objections, please let me know. ------------------ Content-Length: 1216 Lines: 36 From: =?UTF-8?q?Alexander=20M=C3=BCller?= <serveralex@...il.com> commit 4376eee92e5a8332b470040e672ea99cd44c826a upstream. If we end up with no power states, don't look up current vddc. fixes: https://bugs.freedesktop.org/show_bug.cgi?id=44130 agd5f: fix patch formatting Signed-off-by: Alex Deucher <alexander.deucher@....com> Signed-off-by: Dave Airlie <airlied@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- drivers/gpu/drm/radeon/radeon_atombios.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -2568,7 +2568,11 @@ void radeon_atombios_get_power_modes(str rdev->pm.current_power_state_index = rdev->pm.default_power_state_index; rdev->pm.current_clock_mode_index = 0; - rdev->pm.current_vddc = rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage; + if (rdev->pm.default_power_state_index >= 0) + rdev->pm.current_vddc = + rdev->pm.power_state[rdev->pm.default_power_state_index].clock_info[0].voltage.voltage; + else + rdev->pm.current_vddc = 0; } void radeon_atom_set_clock_gating(struct radeon_device *rdev, int enable) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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