From: Gao Pan <pandy.gao-3arQi8VN3Tc@public.gmane.org>
To: <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: <linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
<pandy.gao-3arQi8VN3Tc@public.gmane.org>,
<frank.li-3arQi8VN3Tc@public.gmane.org>,
<fugang.duan-3arQi8VN3Tc@public.gmane.org>
Subject: [Patch V1 2/3] spi: imx: fix potential shift truncation
Date: Thu, 24 Nov 2016 19:04:43 +0800 [thread overview]
Message-ID: <1479985484-6641-2-git-send-email-pandy.gao@nxp.com> (raw)
In-Reply-To: <1479985484-6641-1-git-send-email-pandy.gao-3arQi8VN3Tc@public.gmane.org>
There is a static checker warning in fsl_lpspi_set_cmd().
I intended to write "temp |= (fsl_lpspi->config.mode & 0x3) << 30",
but used "temp |= (fsl_lpspi->config.mode & 0x11) << 30" by mistake.
This patch fixes this potential shift truncation.
Signed-off-by: Gao Pan <pandy.gao-3arQi8VN3Tc@public.gmane.org>
---
drivers/spi/spi-fsl-lpspi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c
index 901bef4..bc4a605 100644
--- a/drivers/spi/spi-fsl-lpspi.c
+++ b/drivers/spi/spi-fsl-lpspi.c
@@ -217,7 +217,7 @@ static void fsl_lpspi_set_cmd(struct fsl_lpspi_data *fsl_lpspi,
temp |= fsl_lpspi->config.bpw - 1;
temp |= fsl_lpspi->config.prescale << 27;
- temp |= (fsl_lpspi->config.mode & 0x11) << 30;
+ temp |= (fsl_lpspi->config.mode & 0x3) << 30;
temp |= (fsl_lpspi->config.chip_select & 0x3) << 24;
/*
--
1.9.1
--
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next prev parent reply other threads:[~2016-11-24 11:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-24 11:04 [Patch V1 1/3] spi: imx: replace schedule() with cond_resched() Gao Pan
[not found] ` <1479985484-6641-1-git-send-email-pandy.gao-3arQi8VN3Tc@public.gmane.org>
2016-11-24 11:04 ` Gao Pan [this message]
[not found] ` <1479985484-6641-2-git-send-email-pandy.gao-3arQi8VN3Tc@public.gmane.org>
2016-11-25 13:10 ` Applied "spi: imx: fix potential shift truncation" to the spi tree Mark Brown
2016-11-24 11:04 ` [Patch V1 3/3] spi: imx: use prepare_transfer_hardware() for lpspi Gao Pan
[not found] ` <1479985484-6641-3-git-send-email-pandy.gao-3arQi8VN3Tc@public.gmane.org>
2016-11-25 13:10 ` Applied "spi: imx: use prepare_transfer_hardware() for lpspi" to the spi tree Mark Brown
2016-11-25 13:10 ` Applied "spi: imx: replace schedule() with cond_resched()" " Mark Brown
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