From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-kernel@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Prchal <jiri.prchal@aksignal.cz>
Subject: [PATCH v1 06/10] misc: at25: Switch to use BIT() instead of custom approaches
Date: Thu, 25 Nov 2021 23:31:59 +0200 [thread overview]
Message-ID: <20211125213203.86693-7-andriy.shevchenko@linux.intel.com> (raw)
In-Reply-To: <20211125213203.86693-1-andriy.shevchenko@linux.intel.com>
It's obvious that custom approach of getting power of 2 number with
int_pow() kinda interesting. Replace it and some others approaches
by using a simple BIT() operation.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/misc/eeprom/at25.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/misc/eeprom/at25.c b/drivers/misc/eeprom/at25.c
index 70cab386040a..c9660a4625ce 100644
--- a/drivers/misc/eeprom/at25.c
+++ b/drivers/misc/eeprom/at25.c
@@ -6,6 +6,7 @@
* Copyright (C) 2006 David Brownell
*/
+#include <linux/bits.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
@@ -17,7 +18,6 @@
#include <linux/spi/spi.h>
#include <linux/spi/eeprom.h>
#include <linux/property.h>
-#include <linux/math.h>
/*
* NOTE: this is an *EEPROM* driver. The vagaries of product naming
@@ -94,7 +94,7 @@ static int at25_ee_read(void *priv, unsigned int offset,
instr = AT25_READ;
if (at25->chip.flags & EE_INSTR_BIT3_IS_ADDR)
- if (offset >= (1U << (at25->addrlen * 8)))
+ if (offset >= BIT(at25->addrlen * 8))
instr |= AT25_INSTR_BIT3;
*cp++ = instr;
@@ -227,7 +227,7 @@ static int at25_ee_write(void *priv, unsigned int off, void *val, size_t count)
instr = AT25_WRITE;
if (at25->chip.flags & EE_INSTR_BIT3_IS_ADDR)
- if (offset >= (1U << (at25->addrlen * 8)))
+ if (offset >= BIT(at25->addrlen * 8))
instr |= AT25_INSTR_BIT3;
*cp++ = instr;
@@ -437,7 +437,7 @@ static int at25_probe(struct spi_device *spi)
return -ENODEV;
}
- at25->chip.byte_len = int_pow(2, id[7] - 0x21 + 4) * 1024;
+ at25->chip.byte_len = BIT(id[7] - 0x21 + 4) * 1024;
if (at25->chip.byte_len > 64 * 1024)
at25->chip.flags |= EE_ADDR3;
else
--
2.33.0
next prev parent reply other threads:[~2021-11-25 21:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-25 21:31 [PATCH v1 00/10] misc: at25: Code cleanups and improvements Andy Shevchenko
2021-11-25 21:31 ` [PATCH v1 01/10] misc: at25: Use at25->chip instead of local chip everywhere in ->probe() Andy Shevchenko
2021-11-25 21:31 ` [PATCH v1 02/10] misc: at25: Unshadow error codes in at25_fw_to_chip() Andy Shevchenko
2021-11-25 21:31 ` [PATCH v1 03/10] misc: at25: Check new property ("address-width") first Andy Shevchenko
2021-11-25 21:31 ` [PATCH v1 04/10] misc: at25: Get platform data via dev_get_platdata() Andy Shevchenko
2021-11-25 21:31 ` [PATCH v1 05/10] misc: at25: Get rid of intermediate storage for AT25 chip data Andy Shevchenko
2021-11-25 21:31 ` Andy Shevchenko [this message]
2021-11-25 21:32 ` [PATCH v1 07/10] misc: at25: Factor out at_fram_to_chip() Andy Shevchenko
2021-11-25 21:32 ` [PATCH v1 08/10] misc: at25: Reorganize headers for better maintenance Andy Shevchenko
2021-11-25 21:32 ` [PATCH v1 09/10] misc: at25: Replace commas by spaces in the ID tables Andy Shevchenko
2021-11-25 21:32 ` [PATCH v1 10/10] misc: at25: Align comment style Andy Shevchenko
2021-11-25 22:03 ` [PATCH v1 00/10] misc: at25: Code cleanups and improvements Arnd Bergmann
2021-11-26 9:52 ` Andy Shevchenko
2021-11-26 9:59 ` Andy Shevchenko
2021-12-01 14:19 ` Andy Shevchenko
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