From: Johannes Thumshirn <jthumshirn@suse.de>
Date: Mon, 31 Aug 2015 20:48:11 +0000 (-0400)
Subject: lpfc: Destroy lpfc_hba_index IDR on module exit
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7973967f803da922af10599fb2bf4d66889e40d1;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

lpfc: Destroy lpfc_hba_index IDR on module exit

Destroy lpfc_hba_index IDR on module exit, reclaiming the allocated memory.

This was detected by the following semantic patch (written by Luis Rodriguez
<mcgrof@suse.com>)
<SmPL>
@ defines_module_init @
declarer name module_init, module_exit;
declarer name DEFINE_IDR;
identifier init;
@@

module_init(init);

@ defines_module_exit @
identifier exit;
@@

module_exit(exit);

@ declares_idr depends on defines_module_init && defines_module_exit @
identifier idr;
@@

DEFINE_IDR(idr);

@ on_exit_calls_destroy depends on declares_idr && defines_module_exit @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
 ...
 idr_destroy(&idr);
 ...
}

@ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
 ...
 +idr_destroy(&idr);
}
</SmPL>

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
---

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 81bfb2d1691b..eaf121a3400f 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -11476,6 +11476,7 @@ lpfc_exit(void)
 		free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
 	}
 	kfree(lpfc_used_cpu);
+	idr_destroy(&lpfc_hba_index);
 }
 
 module_init(lpfc_init);