scsi: ses: Don't attach if enclosure has no components

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commit 3fe97ff3d9 upstream.

An enclosure with no components can't usefully be operated by the driver
(since effectively it has nothing to manage), so report the problem and
don't attach. Not attaching also fixes an oops which could occur if the
driver tries to manage a zero component enclosure.

[mkp: Switched to KERN_WARNING since this scenario is common]

Link: https://lore.kernel.org/r/c5deac044ac409e32d9ad9968ce0dcbc996bfc7a.camel@linux.ibm.com
Cc: stable@vger.kernel.org
Reported-by: Ding Hui <dinghui@sangfor.com.cn>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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James Bottomley 2020-11-28 15:27:21 -08:00 • committed by Greg Kroah-Hartman

parent 7fa1203a1e

commit 5ca5470b33

1 changed files with 6 additions and 0 deletions

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drivers/scsi/ses.c

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