| commit | 43f88d530ec656d9b556fb0d127b30757b1c3d35 | |
| author | Daniel Lichtenberger <daniel.lichtenberger@gmail.com> | |
| Thu, 28 Oct 2010 21:20:12 +0000 (28 23:20 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Tue, 9 Nov 2010 22:05:23 +0000 (9 14:05 -0800) | ||
| tree | ba8eb4e133fff45d25299f345223570409f2b6d4 | treesnapshot (tar.gz zip) |
| parent | eacd121c3d0b74220aa6a91223e0adf7d5ec2497 | commitdiff |
Staging: rtl8192e: fix IOMMU memory leak
Unmap the rx buffer before mapping the new one in rtl8192_rx.
Failing to do so quickly exhausts the IOMMU memory during downloads:
[...] DMA: Out of SW-IOMMU space for 9100 bytes at device ...
Using "iommu=off mem=4g" also fixes the problem because
then pci_map_single does not allocate memory.
Tested on my personal laptop with a RTL8192E device. Without this
patch the kernel quickly runs out of IOMMU memory (downloading 5 MB
of data is sufficient to trigger it), with this patch applied
I haven't experienced any issues so far.
Signed-off-by: Daniel Lichtenberger <daniel.lichtenberger@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Unmap the rx buffer before mapping the new one in rtl8192_rx.
Failing to do so quickly exhausts the IOMMU memory during downloads:
[...] DMA: Out of SW-IOMMU space for 9100 bytes at device ...
Using "iommu=off mem=4g" also fixes the problem because
then pci_map_single does not allocate memory.
Tested on my personal laptop with a RTL8192E device. Without this
patch the kernel quickly runs out of IOMMU memory (downloading 5 MB
of data is sufficient to trigger it), with this patch applied
I haven't experienced any issues so far.
Signed-off-by: Daniel Lichtenberger <daniel.lichtenberger@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/staging/rtl8192e/r8192E_core.c | diffblobblamehistory |