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drm/exynos: fix tests for valid FIMD window number 

Valid values for FIMD windows are from 0 to WINDOWS_NR-1
inclusive (5 windows in total). The WINDOWS_NR is also
a size of fimd_context.win_data array.
However, early-return tests for wrong values of windows
accepted a value of WINDOWS_NR which is out of bound
for fimd_context.win_data.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Krzysztof Kozlowski 2013-05-27 11:56:26 +02:00 committed by Inki Dae
parent 1586d80cbf
commit 37b006e88e
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -381,7 +381,7 @@ static void fimd_win_mode_set(struct device *dev,
if (win == DEFAULT_ZPOS)
win = ctx->default_win;
if (win < 0 || win > WINDOWS_NR)
if (win < 0 || win >= WINDOWS_NR)
return;
offset = overlay->fb_x * (overlay->bpp >> 3);
@ -506,7 +506,7 @@ static void fimd_win_commit(struct device *dev, int zpos)
if (win == DEFAULT_ZPOS)
win = ctx->default_win;
if (win < 0 || win > WINDOWS_NR)
if (win < 0 || win >= WINDOWS_NR)
return;
win_data = &ctx->win_data[win];
@ -622,7 +622,7 @@ static void fimd_win_disable(struct device *dev, int zpos)
if (win == DEFAULT_ZPOS)
win = ctx->default_win;
if (win < 0 || win > WINDOWS_NR)
if (win < 0 || win >= WINDOWS_NR)
return;
win_data = &ctx->win_data[win];