This fixes the sparse warnings about t10_alua_tg_pt_gp accesses in
target_core_spc.c from:
commit 7324f47d4293 ("scsi: target: Replace lun_tg_pt_gp_lock with rcu in
I/O path")
That patch replaced the lun_tg_pt_gp_lock use in the IO path, but didn't
update the INQUIRY code.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Mike Christie <michael.christie@xxxxxxxxxx>
---
drivers/target/target_core_spc.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 22703a0dbd07..4c76498d3fb0 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -40,11 +40,11 @@ static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf)
*
* See spc4r17 section 6.4.2 Table 135
*/
- spin_lock(&lun->lun_tg_pt_gp_lock);
- tg_pt_gp = lun->lun_tg_pt_gp;
+ rcu_read_lock();
+ tg_pt_gp = rcu_dereference(lun->lun_tg_pt_gp);
if (tg_pt_gp)
buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type;
- spin_unlock(&lun->lun_tg_pt_gp_lock);
+ rcu_read_unlock();
}
static u16
@@ -325,14 +325,14 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf)
* Get the PROTOCOL IDENTIFIER as defined by spc4r17
* section 7.5.1 Table 362
*/
- spin_lock(&lun->lun_tg_pt_gp_lock);
- tg_pt_gp = lun->lun_tg_pt_gp;
+ rcu_read_lock();
+ tg_pt_gp = rcu_dereference(lun->lun_tg_pt_gp);
if (!tg_pt_gp) {
- spin_unlock(&lun->lun_tg_pt_gp_lock);
+ rcu_read_unlock();
goto check_lu_gp;
}
tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id;
- spin_unlock(&lun->lun_tg_pt_gp_lock);
+ rcu_read_unlock();
buf[off] = tpg->proto_id << 4;
buf[off++] |= 0x1; /* CODE SET == Binary */
--
2.25.1
