linux/drivers/usb/chipidea
Xu Yang f7d548a62f usb: chipidea: udc: limit usb request length to max 16KB
[ Upstream commit ca8d18aa7b ]

To let the device controller work properly on short packet limitations,
one usb request should only correspond to one dTD. Then every dTD will
set IOC. In theory, each dTD support up to 20KB data transfer if the
offset is 0. Due to we cannot predetermine the offset, this will limit
the usb request length to max 16KB. This should be fine since most of
the user transfer data based on this size policy.

Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20240923081203.2851768-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-01-09 13:31:46 +01:00
..
bits.h USB: chipidea: Use the correct style for SPDX License Identifier 2020-03-16 11:13:47 +08:00
ci.h usb: chipidea: udc: limit usb request length to max 16KB 2025-01-09 13:31:46 +01:00
ci_hdrc_imx.c usb: chipidea: add CI_HDRC_HAS_SHORT_PKT_LIMIT flag 2025-01-09 13:31:46 +01:00
ci_hdrc_imx.h usb: chipidea: imx: add one fsl picophy parameter tuning implementation 2023-07-25 18:21:52 +02:00
ci_hdrc_msm.c usb: chipidea/ci_hdrc_msm: Convert to platform remove callback returning void 2023-05-28 12:36:15 +01:00
ci_hdrc_pci.c usb: chipidea: ci_hdrc_pci: Fix improper use of kerneldoc format 2020-07-09 17:19:56 +02:00
ci_hdrc_tegra.c usb: Explicitly include correct DT includes 2023-07-25 18:20:02 +02:00
ci_hdrc_usb2.c usb: chipidea/ci_hdrc_usb2: Convert to platform remove callback returning void 2023-05-28 12:36:15 +01:00
core.c usb: chipidea: add CI_HDRC_HAS_SHORT_PKT_LIMIT flag 2025-01-09 13:31:46 +01:00
debug.c usb: chipidea: debug: remove redundant 'role' debug file 2023-03-23 17:27:46 +01:00
host.c usb: chipidea: Simplify Tegra DMA alignment code 2023-11-20 11:59:26 +01:00
host.h usb: chipidea: add inline for ci_hdrc_host_driver_init if host is not defined 2020-01-22 07:54:27 +01:00
Kconfig usb: chipidea: make configs for glue drivers visible with EXPERT 2022-09-08 13:32:50 +02:00
Makefile usb: chipidea: imx: avoid unnecessary probe defer 2023-04-05 19:16:59 +02:00
otg.c usb: chipidea: add CI_HDRC_FORCE_VBUS_ACTIVE_ALWAYS flag 2025-01-09 13:31:46 +01:00
otg.h usb: chipidea: core: add controller resume support when controller is powered off 2022-10-23 14:34:53 +02:00
otg_fsm.c usb: chipidea: fix deadlock in ci_otg_del_timer 2022-11-09 12:34:18 +01:00
otg_fsm.h USB: chipidea: Use the correct style for SPDX License Identifier 2020-03-16 11:13:47 +08:00
trace.c usb: chipidea: add tracepoint support for udc 2020-12-10 08:45:26 +08:00
trace.h usb: chipidea: tracing: Use the new __vstring() helper 2022-07-15 17:44:40 -04:00
udc.c usb: chipidea: udc: limit usb request length to max 16KB 2025-01-09 13:31:46 +01:00
udc.h usb: chipidea: udc: add software sg list support 2020-05-06 09:42:35 +08:00
ulpi.c usb: chipidea: Always build ULPI code 2018-07-05 14:22:47 +08:00
usbmisc_imx.c usb: chipidea: imx: add one fsl picophy parameter tuning implementation 2023-07-25 18:21:52 +02:00