linux.git/drivers/staging/rtl8192e, branch v2.6.37 Linux kernel source tree Staging: rtl8192e: fix IOMMU memory leak 2010-11-09T22:05:23+00:00 Daniel Lichtenberger daniel.lichtenberger@gmail.com 2010-10-28T21:20:12+00:00 43f88d530ec656d9b556fb0d127b30757b1c3d35 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>
Staging: rtl8192e: Makefile: cleaned up Makefile cflag lines 2010-10-05T18:56:38+00:00 Tracey Dent tdent48227@gmail.com 2010-10-02T16:37:59+00:00 edffd7d91dc8003fb744ef6fce0271cb9265202b Changed to use the proper ccflags-y option Signed-off-by: Tracey Dent <tdent48227@gmail.com> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Changed to use the proper ccflags-y option

Signed-off-by: Tracey Dent <tdent48227@gmail.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Convert macros to inline functions 2010-09-30T06:15:19+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:40:01+00:00 52cab756a2da989859322aed0573a851aa88731c Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Clean formatting in rtl8192_hard_start_xmit() 2010-09-30T06:15:19+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:39:50+00:00 a922a4b778dc94f697b18aac85425340ca3aeffc Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Clean up rtl8192_pci_initdescring() 2010-09-30T06:15:18+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:39:41+00:00 1f1f19ff628ac3936f88465efb07efde0a4e5a5a Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Clean formatting in rtl8192_tx() 2010-09-30T06:15:18+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:39:31+00:00 067ba6cf6c09b14057f6b8999933fd5780d68a25 Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Remove dead code from rtl8192_tx 2010-09-30T06:15:17+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:39:18+00:00 4b37700dd1ec4a847f1b3133596a397b4c1459d5 Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Clean up rtl8192_halt_adapter() 2010-09-30T06:15:17+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:39:09+00:00 932f4b3aab6ff45858034e0a6b2645d5d4853f08 Remove dead code, fix whitespace, clean comments Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Remove dead code, fix whitespace, clean comments

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Clean up rtl8192_qos_association_resp() 2010-09-30T06:15:16+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:38:59+00:00 b72cb94f4ab5bfcc67233bf3ebc6a2fb358320d2 Fix whitespace, remove dead code. Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Fix whitespace, remove dead code.

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Staging: rtl8192e: Delete some dead code 2010-09-30T06:15:16+00:00 Mike McCormack mikem@ring3k.org 2010-09-24T09:38:51+00:00 f8acdc3d5cb2c76391a19f26536f4aff1fccd4e3 Signed-off-by: Mike McCormack <mikem@ring3k.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>