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Message-ID: <lsq.1479082460.763563938@decadent.org.uk>
Date: Mon, 14 Nov 2016 00:14:20 +0000
From: Ben Hutchings <ben@...adent.org.uk>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC: akpm@...ux-foundation.org,
"Alex Deucher" <alexander.deucher@....com>
Subject: [PATCH 3.16 120/346] drm/radeon: fix firmware info version checks
3.16.39-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@....com>
commit 3edc38a0facef45ee22af8afdce3737f421f36ab upstream.
Some of the checks didn't handle frev 2 tables properly.
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1128,7 +1128,7 @@ bool radeon_atom_get_clock_info(struct d
le16_to_cpu(firmware_info->info.usReferenceClock);
p1pll->reference_div = 0;
- if (crev < 2)
+ if ((frev < 2) && (crev < 2))
p1pll->pll_out_min =
le16_to_cpu(firmware_info->info.usMinPixelClockPLL_Output);
else
@@ -1137,7 +1137,7 @@ bool radeon_atom_get_clock_info(struct d
p1pll->pll_out_max =
le32_to_cpu(firmware_info->info.ulMaxPixelClockPLL_Output);
- if (crev >= 4) {
+ if (((frev < 2) && (crev >= 4)) || (frev >= 2)) {
p1pll->lcd_pll_out_min =
le16_to_cpu(firmware_info->info_14.usLcdMinPixelClockPLL_Output) * 100;
if (p1pll->lcd_pll_out_min == 0)
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