i2c: bcm2835: Store pointer to bus clock
requested to merge github/fork/linosanfilippo-kunbus/fix/REVPI-896/fix_overlay_unload_issue into revpi-4.19
Created by: linosanfilippo-kunbus
The commit bebff81f ("i2c: bcm2835: Model Divider in CCF") introduced a NULL pointer dereference on driver unload. It seems that we can't fetch the bus clock via devm_clk_get in bcm2835_i2c_remove. As an alternative approach store a pointer to the bus clock in the private driver structure.
Fixes: bebff81f ("i2c: bcm2835: Model Divider in CCF") Signed-off-by: Stefan Wahren wahrenst@gmx.net Signed-off-by: Wolfram Sang wsa@the-dreams.de (cherry picked from commit 3b722da6) Signed-off-by: Lino Sanfilippo l.sanfilippo@kunbus.com