On Thursday 06 May 2021 18:10:09 Bjorn Helgaas wrote:

On Thu, May 06, 2021 at 05:31:16PM +0200, Pali Rohár wrote:

quoted

This is 16-bit register at offset 0x1E. Rename current 'rsvd' struct member
to 'rootcap'.

"The 16-bit Root Capabilities register is at offset 0x1e in the PCIe
Capability."

Please make the commit log complete in itself.  In some contexts, the
subject line is not visible at the same time.  It's fine to repeat the
subject in the commit log.

quoted

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Marek Behún <kabel@kernel.org>
Fixes: 23a5fba4d941 ("PCI: Introduce PCI bridge emulated config space common logic")
Cc: stable@vger.kernel.org # e0d9d30b7354 ("PCI: pci-bridge-emul: Fix big-endian support")

I'm not sure how people would deal with *two* SHA1s.

I guess that this is fine per stable document as it mention such example:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html

I have already in past sent patches with Fixes:hash1 and CC:stable/hash2
and were taken correctly.

This patch adds functionality, so it's not really fixing a bug in
23a5fba4d941.

I'm not sure what is the correct meaning of Fixes tag. I included it to
easily determinate in which commit was introduced member name "rsvd"
which should have been named "rootcap".

Submitting patches document is not fully clear for me as I understood it
that Fixes and CC:stable are two different things. E.g. it mention
"Attaching a Fixes: tag does not subvert ... the requirement to Cc:
stable@vger.kernel.org on all stable patch candidates." which I
understood that patch for backporting needs to have Cc:stable:
https://www.kernel.org/doc/html/latest/process/submitting-patches.html

But I will change it as needed. Just I did not know what is "the correct
way".

I see that e0d9d30b7354 came along later and did
"s/u16 rsvd/__le16 rsvd/".

But it seems like a lot to expect for distros and stable kernel
maintainers to interpret this.

Personally I think I would omit both Fixes: and the stable tag since
these two patches (05 and 06) are just adding functionality.

quoted

---
 drivers/pci/pci-bridge-emul.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/pci-bridge-emul.h b/drivers/pci/pci-bridge-emul.h
index b31883022a8e..49bbd37ee318 100644
--- a/drivers/pci/pci-bridge-emul.h
+++ b/drivers/pci/pci-bridge-emul.h

@@ -54,7 +54,7 @@ struct pci_bridge_emul_pcie_conf {
 	__le16 slotctl;
 	__le16 slotsta;
 	__le16 rootctl;
-	__le16 rsvd;
+	__le16 rootcap;
 	__le32 rootsta;
 	__le32 devcap2;
 	__le16 devctl2;

-- 
2.20.1

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel