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[v2,2/6] dmaengine: pl330: Use FFS to calculate burst size

Message ID 20230512141445.2026660-3-joychakr@google.com (mailing list archive)
State Changes Requested
Headers show
Series dmaengine: pl330: Updates and logical changes for peripheral usecases | expand

Commit Message

Joy Chakraborty May 12, 2023, 2:14 p.m. UTC 
Use __ffs to calculate burst size in pl330_prep_dma_memcpy() for
consistency across the driver as other functions already use __ffs for
the same functionality.

Signed-off-by: Joy Chakraborty <joychakr@google.com>
---
 drivers/dma/pl330.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
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Patch

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index c006e481b4c5..39a66ff29e27 100644
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -2804,10 +2804,7 @@  pl330_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dst,
 	while ((src | dst | len) & (burst - 1))
 		burst /= 2;
 
-	desc->rqcfg.src_brst_size = 0;
-	while (burst != (1 << desc->rqcfg.src_brst_size))
-		desc->rqcfg.src_brst_size++;
-
+	desc->rqcfg.src_brst_size = __ffs(burst);
 	desc->rqcfg.src_brst_len = get_burst_len(desc, len);
 	/*
 	 * If burst size is smaller than bus width then make sure we only