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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-05-30 10:03:30 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-05-30 10:03:35 +0200
commitd4820e44b0ae6830b1d634e6d0a425d839388c06 (patch)
tree8f2e5e43623bd37056321de3940820a25d8a6bcf /drivers/scsi/a3000.c
parentc1bb7f31eaef6ed6b9f895b99d9ea12e6b853606 (diff)
[S390] sclp_vt220: fix scheduling while atomic bug.
The driver incorrectly assumed that putchar will only be called from schedulable process context and therefore blocked and waited if no free output buffers where available. Since putchar may also be called from BH context this may lead to deadlocks. To fix this just return the number of characters accepted and let the upper layer handle the rest. The console write function will busy wait (sclp_sync_wait) until a buffer is available again. Cc: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/scsi/a3000.c')
0 files changed, 0 insertions, 0 deletions