Aaro Koskinen 3f91484f6c USB: omap_udc: DMA: Don't enable burst 4 mode ... Commit 65111084c6 ("USB: more omap_udc updates (dma and omap1710)") added setting for DMA burst 4 mode. But I think this should be undone for two reasons: - It breaks DMA on 15xx boards - transfers just silently stall. - On newer OMAP1 boards, like Nokia 770 (omap1710), there is no measurable performance impact when testing TCP throughput with g_ether with large 15000 byte MTU size. It's also worth noting that when the original change was made, the OMAP_DMA_DATA_BURST_4 handling in arch/arm/plat-omap/dma.c was broken, and actually resulted in the same as the OMAP_DMA_DATA_BURST_DIS i.e. burst disabled. This was fixed not until a couple kernel releases later in an unrelated commit 1a8bfa1eb9 ("[ARM] 3142/1: OMAP 2/5: Update files common to omap1 and omap2"). So based on this it seems there was never really a very good reason to enable this burst mode in omap_udc, so remove it now to allow 15xx DMA to work again (it provides 2x throughput compared to PIO mode). Fixes: 65111084c6 ("[PATCH] USB: more omap_udc updates (dma and omap1710)") Cc: stable <stable@kernel.org> Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi> Link: https://patch.msgid.link/ad06qHLclWHeSGnV@darkstar.musicnaut.iki.fi Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2026-04-27 09:49:28 -06:00
..
function	SCSI misc on 20260421	2026-04-21 08:22:18 -07:00
legacy	Revert "usb: legacy: ncm: Fix NPE in gncm_bind"	2026-03-11 16:21:03 +01:00
udc	USB: omap_udc: DMA: Don't enable burst 4 mode	2026-04-27 09:49:28 -06:00
composite.c	Convert 'alloc_obj' family to use the new default GFP_KERNEL argument	2026-02-21 17:09:51 -08:00
config.c	usb: gadget: config: Remove unused usb_gadget_config_buf	2025-06-19 12:26:48 +02:00
configfs.c	Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses	2026-02-22 08:26:33 -08:00
configfs.h
epautoconf.c	usb: gadget: epautoconf: Use USB API functions rather than constants	2025-05-21 13:13:22 +02:00
functions.c
Kconfig	usb: gadget: midi2: Reverse-select at the right place	2025-01-07 11:42:22 +01:00
Makefile
u_f.c	usb: gadget: function: move u_f.h to include/linux/usb/func_utils.h	2024-09-03 09:57:08 +02:00
u_os_desc.h	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
usbstring.c	drivers/usb/gadget: refactor min with min_t	2024-11-13 15:09:50 +01:00