USB: EHCI: make CONFIG_USB_EHCI_TT_NEWSCHED default to Y (37cd681c) · Commits · 戴 / test

This patch (as1382) changes the USB_EHCI_TT_NEWSCHED Kconfig option to be non-experimental and to default to Y. This option has existed for a long time, and I have not heard any complaints concerning it. By contrast, several people have reported that their devices could be made to work only by enabling the option. The point of changing the default is to cause the option to be enabled by distros that simply use the default settings for esoteric things like this. This change was motivated by Bugzilla #15649. Signed-off-by:

Alan Stern <stern@rowland.harvard.edu> CC: David Brownell <david-b@pacbell.net> Signed-off-by:

Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/host/Kconfig

+7 −4

Original line number	Diff line number	Diff line
		@@ -72,8 +72,9 @@ config USB_EHCI_ROOT_HUB_TT
		from ARC, and has since changed hands a few times.

		config USB_EHCI_TT_NEWSCHED
		bool "Improved Transaction Translator scheduling (EXPERIMENTAL)"
		depends on USB_EHCI_HCD && EXPERIMENTAL
		bool "Improved Transaction Translator scheduling"
		depends on USB_EHCI_HCD
		default y
		---help---
		This changes the periodic scheduling code to fill more of the low
		and full speed bandwidth available from the Transaction Translator
		@@ -84,9 +85,11 @@ config USB_EHCI_TT_NEWSCHED
		If you have multiple periodic low/fullspeed devices connected to a
		highspeed USB hub which is connected to a highspeed USB Host
		Controller, and some of those devices will not work correctly
		(possibly due to "ENOSPC" or "-28" errors), say Y.
		(possibly due to "ENOSPC" or "-28" errors), say Y. Conversely, if
		you have only one such device and it doesn't work, you could try
		saying N.

		If unsure, say N.
		If unsure, say Y.

		config USB_EHCI_BIG_ENDIAN_MMIO
		bool

Admin message