crashing in case no SATA driver is actually there:
Apalis iMX6 # sata init data abort pc : [<8ff78e1a>] lr : [<8ff78e1b>] reloc pc : [<1781be1a>] lr : [<1781be1b>] sp : 8df53068 ip : 00000001 fp : 00000002 r10: 8df612e8 r9 : 8df5ceb0 r8 : 8ffc2b28 r7 : 8ff746ed r6 : 00000000 r5 : 68abf82a r4 : 00000000 r3 : 8ff73d39 r2 : c0000000 r1 : 00000000 r0 : 0000000c Flags: nzcv IRQs off FIQs off Mode SVC_32 Code: 47700025 6803b570 6bdd4604 f0254805 (68abf82a) Resetting CPU ...
resetting ...
Investigating this I identified 3 places where no proper checking is done.
This patch set adds such checks leading to a graceful error instead:
Apalis iMX6 # sata init Cannot probe SATA device 0 (err=-19)
Changes in v3: - Added Simon's reviewed-by.
Changes in v2: - Update dm_test_uclass_devices_find() to test this behaviour as suggested by Simon. - Dropped "[PATCH 2/3] dm: sata: add null pointer check for dev" as suggested by Simon. - Added Simon's reviewed-by.
Marcel Ziswiler (2): dm: device: fail uclass_find_first_device() if list_empty cmd: sata: add null pointer check for dev
cmd/sata.c | 4 ++++ drivers/core/uclass.c | 2 +- test/dm/core.c | 4 ++++ 3 files changed, 9 insertions(+), 1 deletion(-)