mirror of https://gitee.com/openkylin/linux.git
748103e723
These patch fix a longstanding bug in the i810 frame buffer driver. The handling of the i2c bus is wrong: A 1 bit should not written to the i2c, these will be done by switch the i2c to input. Driving an 1 bit active is against the i2c spec. An active driven of a 1 bit will result in very strange error, depending which side is the more powerful one. In my case it depends on the temperature of the Display-Controller-EEprom: With an cold eprom a got the correct EDID datas, with a warm one some of the 1 bits was 0 :-( The same bug is also in the intelfb driver in the file drivers/video/intelfb/intelfb_i2c.c. The functions intelfb_gpio_setscl() and intelfb_gpio_setsda() do drive the 1 bit active to the i2c bus. But since i have no card which is used by the intelfb driver i cannot fix it. Signed-off-by: Stefani Seibold <stefani@seibold.net> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org> |
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| .. | ||
| Makefile | ||
| i810-i2c.c | ||
| i810.h | ||
| i810_accel.c | ||
| i810_dvt.c | ||
| i810_gtf.c | ||
| i810_main.c | ||
| i810_main.h | ||
| i810_regs.h | ||