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[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>
This commit is contained in:
Maurizio Lombardi 2014-06-27 06:28:31 -03:00 committed by Mauro Carvalho Chehab
parent 0ca1ba2aac
commit 69b9fe22b1
1 changed files with 2 additions and 3 deletions
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5
drivers/media/platform/s5p-mfc/s5p_mfc_ctrl.c
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@ -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);