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drm/amd/display: Use kvzalloc for potentially large allocations

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Allocating up to 32 physically contiguous pages can easily fail (and has
failed for me), and isn't necessary anyway.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer
2018-04-17 12:25:22 +02:00
committed by Alex Deucher
parent 018d82e5f0
commit bd4caed47a
2 changed files with 45 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

72
drivers/gpu/drm/amd/display/modules/color/color_gamma.c
View File

@@ -1093,19 +1093,19 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
output_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
rgb_user = kzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
rgb_user = kvzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_user)
goto rgb_user_alloc_fail;
rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
rgb_regamma = kvzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_regamma)
goto rgb_regamma_alloc_fail;
axix_x = kzalloc(sizeof(*axix_x) * (ramp->num_entries + 3),
GFP_KERNEL);
axix_x = kvzalloc(sizeof(*axix_x) * (ramp->num_entries + 3),
GFP_KERNEL);
if (!axix_x)
goto axix_x_alloc_fail;
coeff = kzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
coeff = kvzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
if (!coeff)
goto coeff_alloc_fail;
@@ -1157,13 +1157,13 @@ bool mod_color_calculate_regamma_params(struct dc_transfer_func *output_tf,
ret = true;
kfree(coeff);
kvfree(coeff);
coeff_alloc_fail:
kfree(axix_x);
kvfree(axix_x);
axix_x_alloc_fail:
kfree(rgb_regamma);
kvfree(rgb_regamma);
rgb_regamma_alloc_fail:
kfree(rgb_user);
kvfree(rgb_user);
rgb_user_alloc_fail:
return ret;
}
@@ -1192,19 +1192,19 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
input_tf->type = TF_TYPE_DISTRIBUTED_POINTS;
rgb_user = kzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
rgb_user = kvzalloc(sizeof(*rgb_user) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_user)
goto rgb_user_alloc_fail;
curve = kzalloc(sizeof(*curve) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
curve = kvzalloc(sizeof(*curve) * (MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!curve)
goto curve_alloc_fail;
axix_x = kzalloc(sizeof(*axix_x) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
axix_x = kvzalloc(sizeof(*axix_x) * (ramp->num_entries + _EXTRA_POINTS),
GFP_KERNEL);
if (!axix_x)
goto axix_x_alloc_fail;
coeff = kzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
coeff = kvzalloc(sizeof(*coeff) * (MAX_HW_POINTS + _EXTRA_POINTS), GFP_KERNEL);
if (!coeff)
goto coeff_alloc_fail;
@@ -1246,13 +1246,13 @@ bool mod_color_calculate_degamma_params(struct dc_transfer_func *input_tf,
ret = true;
kfree(coeff);
kvfree(coeff);
coeff_alloc_fail:
kfree(axix_x);
kvfree(axix_x);
axix_x_alloc_fail:
kfree(curve);
kvfree(curve);
curve_alloc_fail:
kfree(rgb_user);
kvfree(rgb_user);
rgb_user_alloc_fail:
return ret;
@@ -1281,8 +1281,9 @@ bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
} else if (trans == TRANSFER_FUNCTION_PQ) {
rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_regamma = kvzalloc(sizeof(*rgb_regamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_regamma)
goto rgb_regamma_alloc_fail;
points->end_exponent = 7;
@@ -1302,11 +1303,12 @@ bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_regamma);
kvfree(rgb_regamma);
} else if (trans == TRANSFER_FUNCTION_SRGB ||
trans == TRANSFER_FUNCTION_BT709) {
rgb_regamma = kzalloc(sizeof(*rgb_regamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_regamma = kvzalloc(sizeof(*rgb_regamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_regamma)
goto rgb_regamma_alloc_fail;
points->end_exponent = 0;
@@ -1324,7 +1326,7 @@ bool mod_color_calculate_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_regamma);
kvfree(rgb_regamma);
}
rgb_regamma_alloc_fail:
return ret;
@@ -1348,8 +1350,9 @@ bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
} else if (trans == TRANSFER_FUNCTION_PQ) {
rgb_degamma = kzalloc(sizeof(*rgb_degamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_degamma = kvzalloc(sizeof(*rgb_degamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_degamma)
goto rgb_degamma_alloc_fail;
@@ -1364,11 +1367,12 @@ bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_degamma);
kvfree(rgb_degamma);
} else if (trans == TRANSFER_FUNCTION_SRGB ||
trans == TRANSFER_FUNCTION_BT709) {
rgb_degamma = kzalloc(sizeof(*rgb_degamma) * (MAX_HW_POINTS +
_EXTRA_POINTS), GFP_KERNEL);
rgb_degamma = kvzalloc(sizeof(*rgb_degamma) *
(MAX_HW_POINTS + _EXTRA_POINTS),
GFP_KERNEL);
if (!rgb_degamma)
goto rgb_degamma_alloc_fail;
@@ -1382,7 +1386,7 @@ bool mod_color_calculate_degamma_curve(enum dc_transfer_func_predefined trans,
}
ret = true;
kfree(rgb_degamma);
kvfree(rgb_degamma);
}
points->end_exponent = 0;
points->x_point_at_y1_red = 1;