Commit b05ae01f authored Dec 24, 2018 by Aditya Pakki Committed by Greg Kroah-Hartman Jan 18, 2019

misc/ics932s401: Add a missing check to i2c_smbus_read_word_data



ics932s401_update_device may fail reading in i2c_smbus_read_word_data
due to error in i2c_smbus_xfer. The fix checks the status and defaults
the register to 0.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 068ad41e

drivers/misc/ics932s401.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -146,6 +146,8 @@ static struct ics932s401_data ics932s401_update_device(struct device dev)
		*/
		for (i = 0; i < NUM_MIRRORED_REGS; i++) {
		temp = i2c_smbus_read_word_data(client, regs_to_copy[i]);
		if (temp < 0)
		data->regs[regs_to_copy[i]] = 0;
		data->regs[regs_to_copy[i]] = temp >> 8;
		}

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