staging: r8192e_pci: Handle duplicate PCI ID 0x10ec:0x8192 conflict with rtl8192se

There are two devices with PCI ID 0x10ec:0x8192, namely RTL8192E and
RTL8192SE. The method of distinguishing them is by the revision ID
at offset 0x8 of the PCI configuration space. If the value is 0x10,
then the device uses rtl8192se for a driver.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/rtl8192e/r8192E_core.c b/drivers/staging/rtl8192e/r8192E_core.c
index 58d800f..cd98f89 100644 (file)
--- a/drivers/staging/rtl8192e/r8192E_core.c
+++ b/drivers/staging/rtl8192e/r8192E_core.c
@@ -4532,6 +4532,7 @@ static int __devinit rtl8192_pci_probe(struct pci_dev *pdev,
        u8 unit = 0;
        int ret = -ENODEV;
        unsigned long pmem_start, pmem_len, pmem_flags;
+       u8 revisionid;
 
        RT_TRACE(COMP_INIT,"Configuring chip resources\n");
 
@@ -4592,6 +4593,11 @@ static int __devinit rtl8192_pci_probe(struct pci_dev *pdev,
          pci_write_config_byte(pdev, 0x41, 0x00);
 
 
+       pci_read_config_byte(pdev, 0x08, &revisionid);
+       /* If the revisionid is 0x10, the device uses rtl8192se. */
+       if (pdev->device == 0x8192 && revisionid == 0x10)
+               goto fail1;
+
        pci_read_config_byte(pdev, 0x05, &unit);
        pci_write_config_byte(pdev, 0x05, unit & (~0x04));