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spi: npcm-fiu: Fix UMA reads when dummy.nbytes == 0

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We don't want to use the value of ilog2(0) as dummy.buswidth is 0 when
dummy.nbytes is 0. Since we have no dummy bytes, we don't need to
configure the dummy byte bits per clock register value anyway.

Signed-off-by: "William A. Kennington III" <william@wkennington.com>
Link: https://lore.kernel.org/r/20230922182812.2728066-1-william@wkennington.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
William A. Kennington III 2023-09-22 11:28:12 -07:00 committed by Mark Brown
parent 1a8196a93e
commit 2ec8b01097
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1 changed files with 3 additions and 2 deletions
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drivers/spi/spi-npcm-fiu.c
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@ -353,6 +353,7 @@ static int npcm_fiu_uma_read(struct spi_mem *mem,
uma_cfg |= ilog2(op->cmd.buswidth);
uma_cfg |= ilog2(op->addr.buswidth)
<< NPCM_FIU_UMA_CFG_ADBPCK_SHIFT;
if (op->dummy.nbytes)
uma_cfg |= ilog2(op->dummy.buswidth)
<< NPCM_FIU_UMA_CFG_DBPCK_SHIFT;
uma_cfg |= ilog2(op->data.buswidth)