fbdev: offb: Fix OF node name handling

Commit 5c63e407aaab ("fbdev: Convert to using %pOFn instead of
device_node.name") changed how the OF FB driver handles the OF node
name. This missed the case where the node name is passed to
offb_init_palette_hacks(). This results in a NULL ptr dereference
in strncmp and breaks any system except ones using bootx with no display
node.

Fix this by making offb_init_palette_hacks() use the OF node pointer and
use of_node_name_prefix() helper function instead for node name
comparisons. This helps in moving all OF node name accesses to helper
functions in preparation to remove struct device_node.name pointer.

Fixes: 5c63e407aaab ("fbdev: Convert to using %pOFn instead of device_node.name")
Reported-by: Mathieu Malaterre <[email protected]>
Tested-by: Mathieu Malaterre <[email protected]>
Cc: [email protected] # v4.19+
Cc: Elimar Riesebieter <[email protected]>
Signed-off-by: Rob Herring <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>

0 files changed, 0 insertions, 0 deletions