[PATCH 3.2 122/152] libata: prevent HSM state change race between ISR and PIO

3.2.67-rc1 review patch. If anyone has any objections, please let me know. -- From: David Jeffery commit ce7514526742c0898b837d4395f515b79dfb5a12 upstream. It is possible for ata_sff_flush_pio_task() to set ap->hsm_task_state to HSM_ST_IDLE in between the time

[PATCH 3.2 122/152] libata: prevent HSM state change race between ISR and PIO

3.2.67-rc1 review patch. If anyone has any objections, please let me know. -- From: David Jeffery djeff...@redhat.com commit ce7514526742c0898b837d4395f515b79dfb5a12 upstream. It is possible for ata_sff_flush_pio_task() to set ap-hsm_task_state to HSM_ST_IDLE in between the