linux-kernel - [ 22/50] drm/radeon/dpm/btc: off by one in btc_set_mc_special

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Date:	Wed, 16 Oct 2013 10:45:08 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
	Alex Deucher <alexander.deucher@....com>
Subject: [ 22/50] drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()

3.11-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dan Carpenter <dan.carpenter@...cle.com>

commit 96d8df846f52a720c8ae1fadadfad7c9e733e336 upstream.

It should be ">=" instead of ">" here.  The table->mc_reg_address[]
array has SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE (16) elements.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/radeon/btc_dpm.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/radeon/btc_dpm.c
+++ b/drivers/gpu/drm/radeon/btc_dpm.c
@@ -1913,7 +1913,7 @@ static int btc_set_mc_special_registers(
 			}
 			j++;
 
-			if (j > SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE)
+			if (j >= SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE)
 				return -EINVAL;
 
 			tmp = RREG32(MC_PMG_CMD_MRS);
@@ -1928,7 +1928,7 @@ static int btc_set_mc_special_registers(
 			}
 			j++;
 
-			if (j > SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE)
+			if (j >= SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE)
 				return -EINVAL;
 			break;
 		case MC_SEQ_RESERVE_M >> 2:
@@ -1942,7 +1942,7 @@ static int btc_set_mc_special_registers(
 			}
 			j++;
 
-			if (j > SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE)
+			if (j >= SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE)
 				return -EINVAL;
 			break;
 		default:


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