AuxXxilium/linux_dsm_epyc7002
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54498e8070
linux_dsm_epyc7002/drivers/i2c
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Gustavo A. R. Silva 54498e8070 i2c: altera: Fix potential integer overflow 
Factor out 100 from the equation and do 32-bit arithmetic (3 * clk_mhz / 10)
instead of 64-bit.

Notice that clk_mhz is MHz, so the multiplication will never wrap 32 bits
and there is no need for div_u64().

Addresses-Coverity: 1458369 ("Unintentional integer overflow")
Fixes: 0560ad5762 ("i2c: altera: Add Altera I2C Controller driver")
Suggested-by: David Laight <David.Laight@ACULAB.COM>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2020-02-13 09:29:30 +01:00
..
algos treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
busses i2c: altera: Fix potential integer overflow 2020-02-13 09:29:30 +01:00
muxes i2c: mux: pca954x: support property idle-state 2020-01-03 15:00:53 +01:00
i2c-boardinfo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-core-acpi.c i2c: i2c-core-acpi: convert to use i2c_new_client_device() 2020-01-15 20:39:55 +01:00
i2c-core-base.c i2c: i2c-core-base: convert to use i2c_new_client_device() 2020-01-15 20:40:08 +01:00
i2c-core-of.c i2c: i2c-core-of: convert to use i2c_new_client_device() 2020-01-15 20:40:12 +01:00
i2c-core-slave.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-core-smbus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-core.h Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
i2c-dev.c Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-06-02 10:18:11 -07:00
i2c-mux.c i2c: mux: add sysfs header 2019-06-22 07:32:33 +02:00
i2c-slave-eeprom.c i2c: slave-eeprom: Add read only mode 2019-09-28 20:44:12 +02:00
i2c-smbus.c i2c: smbus: Don't filter out duplicate alerts 2019-11-25 17:13:34 +01:00
i2c-stub.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
Kconfig docs: i2c: convert to ReST and add to driver-api bookset 2019-07-31 13:25:27 -06:00
Makefile i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00