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Diffstat (limited to 'drivers/cache/ax45mp_cache.c')
| -rw-r--r-- | drivers/cache/ax45mp_cache.c | 4 |
1 files changed, 4 insertions, 0 deletions
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); |