linux-kernel - [PATCH 2/4] iio: adc: xilinx: Remove dead code from xadc_zynq

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Date:   Wed, 18 Jul 2018 16:42:09 +0530
From:   Manish Narani <manish.narani@...inx.com>
To:     <jic23@...nel.org>, <knaack.h@....de>, <lars@...afoo.de>,
        <pmeerw@...erw.net>, <michal.simek@...inx.com>,
        <manish.narani@...inx.com>, <linux-iio@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <anirudh@...inx.com>, <sgoud@...inx.com>
Subject: [PATCH 2/4] iio: adc: xilinx: Remove dead code from xadc_zynq_setup

This patch removes dead code from xadc_zynq_setup. The condition
"if (tck_rate > XADC_ZYNQ_TCK_RATE_MAX)" cannot be true at any point of
time. There is also an incompatible parameter used in the code.
This patch fixes the same reported by coverity.

Signed-off-by: Manish Narani <manish.narani@...inx.com>
---
 drivers/iio/adc/xilinx-xadc-core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index 27b45df..248cffa 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -341,8 +341,6 @@ static int xadc_zynq_setup(struct platform_device *pdev,
 
 	pcap_rate = clk_get_rate(xadc->clk);
 
-	if (tck_rate > XADC_ZYNQ_TCK_RATE_MAX)
-		tck_rate = XADC_ZYNQ_TCK_RATE_MAX;
 	if (tck_rate > pcap_rate / 2) {
 		div = 2;
 	} else {
@@ -1045,7 +1043,7 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 	unsigned int num_channels;
 	const char *external_mux;
 	u32 ext_mux_chan;
-	int reg;
+	u32 reg;
 	int ret;
 
 	*conf = 0;
-- 
2.1.1