[PATCH] m41t00: fix bitmasks when writing to chip
Fix the bitmasks used when writing to the M41T00 registers. The original code used a mask of 0x7f when writing to each register, this is incorrect and probably the result of a copy-paste error. As a result years from 1980 to 1999 will be read back as 2000 to 2019. Signed-off-by: David Barksdale <amatus@ocgnet.org> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -131,13 +131,13 @@ m41t00_set(void *arg)
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if ((i2c_smbus_write_byte_data(save_client, 0, tm.tm_sec & 0x7f) < 0)
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|| (i2c_smbus_write_byte_data(save_client, 1, tm.tm_min & 0x7f)
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< 0)
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|| (i2c_smbus_write_byte_data(save_client, 2, tm.tm_hour & 0x7f)
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|| (i2c_smbus_write_byte_data(save_client, 2, tm.tm_hour & 0x3f)
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< 0)
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|| (i2c_smbus_write_byte_data(save_client, 4, tm.tm_mday & 0x7f)
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|| (i2c_smbus_write_byte_data(save_client, 4, tm.tm_mday & 0x3f)
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< 0)
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|| (i2c_smbus_write_byte_data(save_client, 5, tm.tm_mon & 0x7f)
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|| (i2c_smbus_write_byte_data(save_client, 5, tm.tm_mon & 0x1f)
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< 0)
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|| (i2c_smbus_write_byte_data(save_client, 6, tm.tm_year & 0x7f)
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|| (i2c_smbus_write_byte_data(save_client, 6, tm.tm_year & 0xff)
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< 0))
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dev_warn(&save_client->dev,"m41t00: can't write to rtc chip\n");
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