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| author | Rafał Miłecki <zajec5@gmail.com> | 2009-12-17 02:00:46 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2009-12-23 04:14:03 +0300 |
| commit | c31ad97f1886a2ff0f3356dc31d50c57944365da (patch) | |
| tree | 4e6de647819a7acdcd7651efeb7c1db14a6179c7 /drivers/gpu/drm/radeon/atom.c | |
| parent | d79766fab9975c6414ebab7d2abf017834a48c35 (diff) | |
| download | linux-c31ad97f1886a2ff0f3356dc31d50c57944365da.tar.xz | |
drm/radeon/kms: prevent parallel AtomBIOS calls
This just adds a mutex around the atombios table execution
so we don't call it from two contexts at once.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/atom.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atom.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c index 6578d19dff93..388140a7e651 100644 --- a/drivers/gpu/drm/radeon/atom.c +++ b/drivers/gpu/drm/radeon/atom.c @@ -58,6 +58,7 @@ typedef struct { } atom_exec_context; int atom_debug = 0; +static void atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params); void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params); static uint32_t atom_arg_mask[8] = @@ -573,7 +574,7 @@ static void atom_op_calltable(atom_exec_context *ctx, int *ptr, int arg) else SDEBUG(" table: %d\n", idx); if (U16(ctx->ctx->cmd_table + 4 + 2 * idx)) - atom_execute_table(ctx->ctx, idx, ctx->ps + ctx->ps_shift); + atom_execute_table_locked(ctx->ctx, idx, ctx->ps + ctx->ps_shift); } static void atom_op_clear(atom_exec_context *ctx, int *ptr, int arg) @@ -1040,7 +1041,7 @@ static struct { atom_op_shr, ATOM_ARG_MC}, { atom_op_debug, 0},}; -void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) +static void atom_execute_table_locked(struct atom_context *ctx, int index, uint32_t * params) { int base = CU16(ctx->cmd_table + 4 + 2 * index); int len, ws, ps, ptr; @@ -1092,6 +1093,13 @@ void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) kfree(ectx.ws); } +void atom_execute_table(struct atom_context *ctx, int index, uint32_t * params) +{ + mutex_lock(&ctx->mutex); + atom_execute_table_locked(ctx, index, params); + mutex_unlock(&ctx->mutex); +} + static int atom_iio_len[] = { 1, 2, 3, 3, 3, 3, 4, 4, 4, 3 }; static void atom_index_iio(struct atom_context *ctx, int base) |