[patch 19/40] MSI: Use correct data offset for 32-bit MSI in read_msi_msg()
-stable review patch. If anyone has any objections, please let us know.
--
From: Roland Dreier <[EMAIL PROTECTED]>
patch cbf5d9e6b9bcf03291cbb51db144b3e2773a8a2d in mainline.
While reading the MSI code trying to find a reason why MSI wouldn't
work for devices that have a 32-bit MSI address capability, I noticed
that read_msi_msg() seems to read the message data from the wrong
offset in this case.
Signed-off-by: Roland Dreier <[EMAIL PROTECTED]>
Acked-by: Eric W. Biederman <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/pci/msi.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -132,7 +132,7 @@ void read_msi_msg(unsigned int irq, stru
pci_read_config_word(dev, msi_data_reg(pos, 1), );
} else {
msg->address_hi = 0;
- pci_read_config_word(dev, msi_data_reg(pos, 1), );
+ pci_read_config_word(dev, msi_data_reg(pos, 0), );
}
msg->data = data;
break;
--
-
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[patch 19/40] MSI: Use correct data offset for 32-bit MSI in read_msi_msg()
-stable review patch. If anyone has any objections, please let us know.
--
From: Roland Dreier [EMAIL PROTECTED]
patch cbf5d9e6b9bcf03291cbb51db144b3e2773a8a2d in mainline.
While reading the MSI code trying to find a reason why MSI wouldn't
work for devices that have a 32-bit MSI address capability, I noticed
that read_msi_msg() seems to read the message data from the wrong
offset in this case.
Signed-off-by: Roland Dreier [EMAIL PROTECTED]
Acked-by: Eric W. Biederman [EMAIL PROTECTED]
Signed-off-by: Greg Kroah-Hartman [EMAIL PROTECTED]
---
drivers/pci/msi.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -132,7 +132,7 @@ void read_msi_msg(unsigned int irq, stru
pci_read_config_word(dev, msi_data_reg(pos, 1), data);
} else {
msg-address_hi = 0;
- pci_read_config_word(dev, msi_data_reg(pos, 1), data);
+ pci_read_config_word(dev, msi_data_reg(pos, 0), data);
}
msg-data = data;
break;
--
-
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Please read the FAQ at http://www.tux.org/lkml/
