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| author | Maurizio Lombardi <mlombard@redhat.com> | 2014-06-27 13:28:31 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-07-21 22:00:56 +0400 |
| commit | 69b9fe22b19b31d9de96d4a181f7206fd29ab743 (patch) | |
| tree | 6ec02bbe1ef256cd4b1f0457e91d97c7c6c8cf00 /drivers/media/platform/s5p-mfc | |
| parent | 0ca1ba2aac5f6b26672099b13040c5b40db93486 (diff) | |
| download | linux-69b9fe22b19b31d9de96d4a181f7206fd29ab743.tar.xz | |
[media] s5p: fix error code path when failing to allocate DMA memory
In the s5p_mfc_alloc_firmware() function there are some mistakes
where the code checks whether the DMA memory is properly allocated or
not.
First of all dma_alloc_coherent() returns NULL in case of error.
The code also checked two times fw_virt_addr, ignoring
the bank2_virt pointer.
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/platform/s5p-mfc')
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c b/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c index 6c3f8f743900..390ca20be6ef 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c @@ -38,8 +38,7 @@ int s5p_mfc_alloc_firmware(struct s5p_mfc_dev *dev) dev->fw_virt_addr = dma_alloc_coherent(dev->mem_dev_l, dev->fw_size, &dev->bank1, GFP_KERNEL); - if (IS_ERR_OR_NULL(dev->fw_virt_addr)) { - dev->fw_virt_addr = NULL; + if (!dev->fw_virt_addr) { mfc_err("Allocating bitprocessor buffer failed\n"); return -ENOMEM; } @@ -48,7 +47,7 @@ int s5p_mfc_alloc_firmware(struct s5p_mfc_dev *dev) bank2_virt = dma_alloc_coherent(dev->mem_dev_r, 1 << MFC_BASE_ALIGN_ORDER, &bank2_dma_addr, GFP_KERNEL); - if (IS_ERR(dev->fw_virt_addr)) { + if (!bank2_virt) { mfc_err("Allocating bank2 base failed\n"); dma_free_coherent(dev->mem_dev_l, dev->fw_size, dev->fw_virt_addr, dev->bank1); |