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fbdev: offb: Fix OF node name handling
Commit 5c63e40 ("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: 5c63e40 ("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]>
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