PCI: dwc: Fix MSI-X EP framework address calculation bug
authorGustavo Pimentel <gustavo.pimentel@synopsys.com>
Fri, 23 Nov 2018 17:00:21 +0000 (18:00 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 5 Dec 2018 18:32:07 +0000 (19:32 +0100)
commit1ce69ec307fd540d13355f3a3c6c83dcd87e6f9f
tree10962de0fac06be5c3541e549373e80ab5c55065
parentb391ed731b393a857067de658d826b059652ca02
PCI: dwc: Fix MSI-X EP framework address calculation bug

commit 15cb127e3c8f6232096d5dba6a5b4046bc292d70 upstream.

Fix an error caused by 3-bit right rotation on offset address
calculation of MSI-X table in dw_pcie_ep_raise_msix_irq().

The initial testing code was setting by default the offset address of
MSI-X table to zero, so that even with a 3-bit right rotation the
computed result would still be zero and valid, therefore this bug went
unnoticed.

Fixes: beb4641a787d ("PCI: dwc: Add MSI-X callbacks handler")
Signed-off-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
[lorenzo.pieralisi@arm.com: updated commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/pci/controller/dwc/pcie-designware-ep.c