!2518 [sync] PR-2501: scsi: mpt3sas: Perform additional retries if doorbell read returns 0

Merge Pull Request from: @openeuler-sync-bot 
 

Origin pull request: 
https://gitee.com/openeuler/kernel/pulls/2501 
 
PR sync from: Hao Zhang <Hao.Zhang@windriver.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/ZXAW4BBFA5YACYB6ULOU4ZVAKPJ4Q6QO/ 
 
https://gitee.com/openeuler/kernel/issues/I868SX 
 
Link:https://gitee.com/openeuler/kernel/pulls/2518

 

Reviewed-by: sanglipeng <sanglipeng1@jd.com>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>