An issue was reported in [1] and [2] that the latest version of the i2c driver was not properly loading. After analysis it was determined that the new clock code was failiing because the i2c driver was trying to load before the bcm2835-clk driver when not loaded as a module. This is fixed by actually attempting to grab a reference to the clock and failing out with a EPROBE_DEFER if it's not there. This gives the other drivers an opportunity to load. This series also fixes a related bug where the clock setup code in the probe function could cause an issue where the IRQ would be requested by the driver and never freed in case of some clock setup failure. The patch moves this IRQ code to the end of the probe function where it will not cause this issue. [1] - https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=242856 [2] - https://archlinuxarm.org/forum/viewtopic.php?f=23&t=13719 Annaliese McDermond (2): i2c: bcm2835: Move IRQ request after clock code in probe i2c: bcm2835: Ensure clock exists when probing drivers/i2c/busses/i2c-bcm2835.c | 42 +++++++++++++++++++------------- 1 file changed, 25 insertions(+), 17 deletions(-) -- 2.19.1
