diff options
| author | Bingbu Cao <bingbu.cao@intel.com> | 2024-11-05 03:45:08 +0100 |
|---|---|---|
| committer | Hans Verkuil <hverkuil@xs4all.nl> | 2024-11-07 09:05:58 +0100 |
| commit | 7af76aa153286051ec10768eb4116209748da15f (patch) | |
| tree | 62102a57df5a261816a9d89a5541935cda516512 /drivers/media | |
| parent | media: ipu6: optimize the IPU6 MMU unmapping flow (diff) | |
| download | linux-7af76aa153286051ec10768eb4116209748da15f.tar.xz linux-7af76aa153286051ec10768eb4116209748da15f.zip | |
media: ipu6: make the ipu6_mmu_unmap() as a void function
The DMA unmap API is not supposed to return value. Thus this patch
changes the ipu6_mmu_unmap() as a void function and DMA unmapping
didn't check the return value.
Signed-off-by: Bingbu Cao <bingbu.cao@intel.com>
[Sakari Ailus: Drop unnecessary returns.]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/pci/intel/ipu6/ipu6-mmu.c | 19 | ||||
| -rw-r--r-- | drivers/media/pci/intel/ipu6/ipu6-mmu.h | 4 |
2 files changed, 11 insertions, 12 deletions
diff --git a/drivers/media/pci/intel/ipu6/ipu6-mmu.c b/drivers/media/pci/intel/ipu6/ipu6-mmu.c index 9ad04a92ce84..a81e9b09a3c5 100644 --- a/drivers/media/pci/intel/ipu6/ipu6-mmu.c +++ b/drivers/media/pci/intel/ipu6/ipu6-mmu.c @@ -254,8 +254,8 @@ static u32 *alloc_l2_pt(struct ipu6_mmu_info *mmu_info) return pt; } -static size_t l2_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, - phys_addr_t dummy, size_t size) +static void l2_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, + phys_addr_t dummy, size_t size) { unsigned int l2_entries; unsigned int l2_idx; @@ -301,7 +301,6 @@ static size_t l2_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, WARN_ON_ONCE(size); spin_unlock_irqrestore(&mmu_info->lock, flags); - return l2_entries << ISP_PAGE_SHIFT; } static int l2_map(struct ipu6_mmu_info *mmu_info, unsigned long iova, @@ -406,10 +405,10 @@ static int __ipu6_mmu_map(struct ipu6_mmu_info *mmu_info, unsigned long iova, return l2_map(mmu_info, iova_start, paddr, size); } -static size_t __ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, - unsigned long iova, size_t size) +static void __ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, + unsigned long iova, size_t size) { - return l2_unmap(mmu_info, iova, 0, size); + l2_unmap(mmu_info, iova, 0, size); } static int allocate_trash_buffer(struct ipu6_mmu *mmu) @@ -650,8 +649,8 @@ phys_addr_t ipu6_mmu_iova_to_phys(struct ipu6_mmu_info *mmu_info, return phy_addr; } -size_t ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, - size_t size) +void ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, + size_t size) { unsigned int min_pagesz; @@ -668,10 +667,10 @@ size_t ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, if (!IS_ALIGNED(iova | size, min_pagesz)) { dev_err(NULL, "unaligned: iova 0x%lx size 0x%zx min_pagesz 0x%x\n", iova, size, min_pagesz); - return 0; + return; } - return __ipu6_mmu_unmap(mmu_info, iova, size); + __ipu6_mmu_unmap(mmu_info, iova, size); } int ipu6_mmu_map(struct ipu6_mmu_info *mmu_info, unsigned long iova, diff --git a/drivers/media/pci/intel/ipu6/ipu6-mmu.h b/drivers/media/pci/intel/ipu6/ipu6-mmu.h index 21cdb0f146eb..8e40b4a66d7d 100644 --- a/drivers/media/pci/intel/ipu6/ipu6-mmu.h +++ b/drivers/media/pci/intel/ipu6/ipu6-mmu.h @@ -66,8 +66,8 @@ int ipu6_mmu_hw_init(struct ipu6_mmu *mmu); void ipu6_mmu_hw_cleanup(struct ipu6_mmu *mmu); int ipu6_mmu_map(struct ipu6_mmu_info *mmu_info, unsigned long iova, phys_addr_t paddr, size_t size); -size_t ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, - size_t size); +void ipu6_mmu_unmap(struct ipu6_mmu_info *mmu_info, unsigned long iova, + size_t size); phys_addr_t ipu6_mmu_iova_to_phys(struct ipu6_mmu_info *mmu_info, dma_addr_t iova); #endif |