From: Lad Prabhakar <[email protected]>
Align the end size to cache boundary size in ax45mp_dma_cache_wback()
callback likewise done in ax45mp_dma_cache_inv() callback.
Additionally return early in case of start == end.
Fixes: d34599bcd2e4 ("cache: Add L2 cache management for Andes AX45MP RISC-V core")
Reported-by: Pavel Machek <[email protected]>
Signed-off-by: Lad Prabhakar <[email protected]>
---
drivers/cache/ax45mp_cache.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/cache/ax45mp_cache.c b/drivers/cache/ax45mp_cache.c
index 57186c58dc84..1d7dd3d2c101 100644
--- a/drivers/cache/ax45mp_cache.c
+++ b/drivers/cache/ax45mp_cache.c
@@ -129,8 +129,12 @@ static void ax45mp_dma_cache_wback(phys_addr_t paddr, size_t size)
unsigned long line_size;
unsigned long flags;
+ if (unlikely(start == end))
+ return;
+
line_size = ax45mp_priv.ax45mp_cache_line_size;
start = start & (~(line_size - 1));
+ end = ((end + line_size - 1) & (~(line_size - 1)));
local_irq_save(flags);
ax45mp_cpu_dcache_wb_range(start, end);
local_irq_restore(flags);
--
2.34.1
Hello:
This patch was applied to riscv/linux.git (fixes)
by Conor Dooley <[email protected]>:
On Sat, 3 Feb 2024 21:26:40 +0000 you wrote:
> From: Lad Prabhakar <[email protected]>
>
> Align the end size to cache boundary size in ax45mp_dma_cache_wback()
> callback likewise done in ax45mp_dma_cache_inv() callback.
>
> Additionally return early in case of start == end.
>
> [...]
Here is the summary with links:
- cache: ax45mp_cache: Align end size to cache boundary in ax45mp_dma_cache_wback()
https://git.kernel.org/riscv/c/9bd405c48b0a
You are awesome, thank you!
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