diff mbox series

[v8,5/6] iio: adc: mcp3911: avoid ambiguity parameters in macros

Message ID 20230822192259.1125792-6-marcus.folkesson@gmail.com (mailing list archive)
State Accepted
Headers show
Series Add support for the whole MCP39xx family | expand

Commit Message

Marcus Folkesson Aug. 22, 2023, 7:22 p.m. UTC 
Name macro parameters after what they represent instead of 'x'
and make sure the evaluation of that will have no side effects.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
---

Notes:
    v5:
        - New patch in this series
    v6:
        - change 'ch' to '(ch)'
    v7:
        - Reword commit message
    v8:
        - No changes

 drivers/iio/adc/mcp3911.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
index f9db08813645..281cc1211fd6 100644
--- a/drivers/iio/adc/mcp3911.c
+++ b/drivers/iio/adc/mcp3911.c
@@ -29,8 +29,8 @@ 
 #define MCP3911_REG_MOD			0x06
 #define MCP3911_REG_PHASE		0x07
 #define MCP3911_REG_GAIN		0x09
-#define MCP3911_GAIN_MASK(ch)		(GENMASK(2, 0) << 3 * ch)
-#define MCP3911_GAIN_VAL(ch, val)      ((val << 3 * ch) & MCP3911_GAIN_MASK(ch))
+#define MCP3911_GAIN_MASK(ch)		(GENMASK(2, 0) << 3 * (ch))
+#define MCP3911_GAIN_VAL(ch, val)      ((val << 3 * (ch)) & MCP3911_GAIN_MASK(ch))
 
 #define MCP3911_REG_STATUSCOM		0x0a
 #define MCP3911_STATUSCOM_DRHIZ		BIT(12)
@@ -51,8 +51,8 @@ 
 #define MCP3911_REG_GAINCAL_CH1		0x17
 #define MCP3911_REG_VREFCAL		0x1a
 
-#define MCP3911_CHANNEL(x)		(MCP3911_REG_CHANNEL0 + x * 3)
-#define MCP3911_OFFCAL(x)		(MCP3911_REG_OFFCAL_CH0 + x * 6)
+#define MCP3911_CHANNEL(ch)		(MCP3911_REG_CHANNEL0 + (ch) * 3)
+#define MCP3911_OFFCAL(ch)		(MCP3911_REG_OFFCAL_CH0 + (ch) * 6)
 
 /* Internal voltage reference in mV */
 #define MCP3911_INT_VREF_MV		1200