[U-Boot] [PATCH v2 0/2] While converting SATA on Apalis iMX6 to use driver model I noticed it
Marcel Ziswiler
marcel at ziswiler.com
Fri Jan 25 12:40:47 UTC 2019
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 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(-)
--
2.20.1
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