[PATCH v3 2/5] arcmsr: fixes not release allocated resource

[Ching Huang]

From: Ching Huang <ching2...@areca.com.tw>

Releasing allocated resource if get configuration data failed.

Signed-of-by: Ching Huang <ching2...@areca.com.tw>

---

diff -uprN a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
--- a/drivers/scsi/arcmsr/arcmsr_hba.c  2015-11-24 11:35:26.000000000 +0800
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c  2015-11-25 19:04:44.590970000 +0800
@@ -2664,7 +2664,7 @@ static bool arcmsr_hbaB_get_config(struc
        if (!arcmsr_hbaB_wait_msgint_ready(acb)) {
                printk(KERN_NOTICE "arcmsr%d: wait 'get adapter firmware \
                        miscellaneous data' timeout \n", acb->host->host_no);
-               return false;
+               goto err_free_dma;
        }
        count = 8;
        while (count){
@@ -2707,6 +2707,10 @@ static bool arcmsr_hbaB_get_config(struc
        acb->firm_cfg_version = readl(&reg->message_rwbuffer[25]);  
/*firm_cfg_version,25,100-103*/
        /*firm_ide_channels,4,16-19*/
        return true;
+err_free_dma:
+       dma_free_coherent(&acb->pdev->dev, acb->roundup_ccbsize,
+                       acb->dma_coherent2, acb->dma_coherent_handle2);
+       return false;
 }
 
 static bool arcmsr_hbaC_get_config(struct AdapterControlBlock *pACB)


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