Re: [PATCH] scsi: pm8001: return error code if no attached dev

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On 2023/11/13 13:56, Jason Yan wrote:
Hi, Su

On 2023/11/13 13:01, Su Hui wrote:
Clang static analyzer complains that value stored to 'res' is never read.
Return the error code when sas_find_attached_phy_id() failed.

Fixes: ec64858657a8 ("scsi: pm8001: Use sas_find_attached_phy_id() instead of open coding it")

This 'Fixes' tag is not right. This commit is only a refactor and did not change the original logic here.

Hi, Jason

Thanks for your reply. But I think the logic of this code is changed.

Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
---
  drivers/scsi/pm8001/pm8001_sas.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/pm8001/pm8001_sas.c b/drivers/scsi/pm8001/pm8001_sas.c
index a5a31dfa4512..a1f58bfff5c0 100644
--- a/drivers/scsi/pm8001/pm8001_sas.c
+++ b/drivers/scsi/pm8001/pm8001_sas.c
@@ -662,6 +662,8 @@ static int pm8001_dev_found_notify(struct domain_device *dev)
                     SAS_ADDR(dev->sas_addr),
                     SAS_ADDR(parent_dev->sas_addr));
              res = phy_id;
+            pm8001_free_dev(pm8001_device);
+            goto found_out;

Before this patch, we won't go to label 'found_out', and will call PM8001_CHIP_DISP->reg_dev_req() ....

After this patch, we just free the 'pm8001_device' and return the error code.

Or maybe I misunderstand somewhere?

Su Hui




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