[PATCH 2/2] qib: use pci_dev->revision

[PATCH 2/2] qib: use pci_dev->revision

[Sergei Shtylyov]

The driver reads PCI revision ID from the PCI configuration register while it's
already stored by PCI subsystem in the 'revision' field of 'struct pci_dev'...

Signed-off-by: Sergei Shtylyov <sshtylyov-hkdhdckH98+B+jHODAdFcQ@public.gmane.org>

---
The patch is against the recent Linus' tree.

 drivers/infiniband/hw/qib/qib_pcie.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Index: linux-2.6/drivers/infiniband/hw/qib/qib_pcie.c
===================================================================
--- linux-2.6.orig/drivers/infiniband/hw/qib/qib_pcie.c
+++ linux-2.6/drivers/infiniband/hw/qib/qib_pcie.c
@@ -526,11 +526,8 @@ static int qib_tune_pcie_coalesce(struct
 	 */
 	devid = parent->device;
 	if (devid >= 0x25e2 && devid <= 0x25fa) {
-		u8 rev;
-
 		/* 5000 P/V/X/Z */
-		pci_read_config_byte(parent, PCI_REVISION_ID, &rev);
-		if (rev <= 0xb2)
+		if (parent->revision <= 0xb2)
 			bits = 1U << 10;
 		else
 			bits = 7U << 10;
--
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RE: [PATCH 2/2] qib: use pci_dev->revision

[Mike Marciniszyn]

> The driver reads PCI revision ID from the PCI configuration register while it's
> already stored by PCI subsystem in the 'revision' field of 'struct pci_dev'...

Thanks for the patch.

qib: use pci_dev->revision

Acked-by: Mike Marciniszyn <mike.marciniszyn-h88ZbnxC6KDQT0dZR+AlfA@public.gmane.org>


-----Original Message-----
From: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org [mailto:linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org] On Behalf Of Sergei Shtylyov
Sent: Saturday, May 07, 2011 1:42 PM
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org; sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org; hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org; linux-kernel
Subject: [PATCH 2/2] qib: use pci_dev->revision

The driver reads PCI revision ID from the PCI configuration register while it's
already stored by PCI subsystem in the 'revision' field of 'struct pci_dev'...

Signed-off-by: Sergei Shtylyov <sshtylyov-hkdhdckH98+B+jHODAdFcQ@public.gmane.org>

---
The patch is against the recent Linus' tree.

 drivers/infiniband/hw/qib/qib_pcie.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Index: linux-2.6/drivers/infiniband/hw/qib/qib_pcie.c
===================================================================
--- linux-2.6.orig/drivers/infiniband/hw/qib/qib_pcie.c
+++ linux-2.6/drivers/infiniband/hw/qib/qib_pcie.c
@@ -526,11 +526,8 @@ static int qib_tune_pcie_coalesce(struct
         */
        devid = parent->device;
        if (devid >= 0x25e2 && devid <= 0x25fa) {
-               u8 rev;
-
                /* 5000 P/V/X/Z */
-               pci_read_config_byte(parent, PCI_REVISION_ID, &rev);
-               if (rev <= 0xb2)
+               if (parent->revision <= 0xb2)
                        bits = 1U << 10;
                else
                        bits = 7U << 10;
--
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