kernel.git/arch/xtensa/platforms, branch linux-5.13.y

xtensa: ISS: don't panic in rs_init

2021-09-18T11:42:05Z

[ Upstream commit 23411c720052ad860b3e579ee4873511e367130a ] While alloc_tty_driver failure in rs_init would mean we have much bigger problem, there is no reason to panic when tty_register_driver fails there. It can fail for various reasons. So handle the failure gracefully. Actually handle them both while at it. This will make at least the console functional as it was enabled earlier by console_initcall in iss_console_init. Instead of shooting down the whole system. We move tty_port_init() after alloc_tty_driver(), so that we don't need to destroy the port in case the latter function fails. Cc: Chris Zankel Cc: Max Filippov Cc: linux-xtensa@linux-xtensa.org Acked-by: Max Filippov Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210723074317.32690-2-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

Merge tag 'xtensa-20210429' of git://github.com/jcmvbkbc/linux-xtensa

2021-04-30T19:09:28Z

Pull Xtensa updates from Max Filippov: - switch to generic syscall generation scripts - new GDBIO implementation for xtensa semihosting interface - various small code fixes and cleanups - a few typo fixes in comments and Kconfig help text * tag 'xtensa-20210429' of git://github.com/jcmvbkbc/linux-xtensa: xtensa: ISS: add GDBIO implementation to semihosting interface xtensa: ISS: split simcall implementation from semihosting interface xtensa: simcall.h: Change compitible to compatible xtensa: Couple of typo fixes xtensa: drop extraneous register load from initialize_mmu xtensa: fix pgprot_noncached assumptions xtensa: simplify coherent_kvaddr logic xtensa: syscalls: switch to generic syscallhdr.sh xtensa: syscalls: switch to generic syscalltbl.sh xtensa: stop filling syscall array with sys_ni_syscall xtensa: remove unneeded export in boot-elf/Makefile xtensa: move CONFIG_CPU_*_ENDIAN defines to Kconfig xtensa: fix warning comparing pointer to 0 xtensa: fix spelling mistake in Kconfig "wont" -> "won't"

xtensa: ISS: add GDBIO implementation to semihosting interface

2021-04-04T22:39:04Z

Add GDBIO implementation for the xtensa semihosting interface. It offers less functions than the simcall interface, so make some semihosting functions optional and return error when implementation is not available. Add Kconfig menu to select semihosting implementation and add simcall and GDBIO choices there. Signed-off-by: Max Filippov

xtensa: ISS: split simcall implementation from semihosting interface

2021-04-04T22:39:04Z

Disconnect existing ISS simcall implementation from the semihosting interface to allow for alternative implementations selectable at configure time. Signed-off-by: Max Filippov

xtensa: simcall.h: Change compitible to compatible

2021-04-04T22:39:04Z

s/compitible/compatible/ Signed-off-by: Bhaskar Chowdhury Message-Id: <20210326012739.18038-1-unixbhaskar@gmail.com> Signed-off-by: Max Filippov

tty: do not check tty_unregister_driver's return value

2021-03-10T08:34:09Z

These drivers check tty_unregister_driver return value. But they don't handle a failure correctly (they free the driver in any case). So stop checking tty_unregister_driver return value and remove also the prints. In the next patch, tty_unregister_driver's return type will be switched to void. Cc: Chris Zankel Cc: Max Filippov Cc: linux-xtensa@linux-xtensa.org Cc: Jiri Kosina Cc: David Sterba Reviewed-by: Max Filippov Acked-by: David Sterba Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210302062214.29627-34-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman

tty: xtensa/iss, make rs_init static

2021-03-10T08:34:08Z

To fix the warning: warning: no previous prototype for 'rs_init' Cc: Chris Zankel Cc: Max Filippov Cc: linux-xtensa@linux-xtensa.org Acked-by: Max Filippov Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210302062214.29627-33-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman

tty: xtensa/iss, setup the timer statically

2021-03-10T08:34:08Z

Use DEFINE_TIMER and avoid runtime initialization of the serial_timer. Cc: Chris Zankel Cc: Max Filippov Cc: linux-xtensa@linux-xtensa.org Acked-by: Max Filippov Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210302062214.29627-32-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman

tty: xtensa/iss, remove stale comments

2021-03-10T08:34:08Z

These are likely taken over from amiserial. iss doesn't do anything of that. Cc: Chris Zankel Cc: Max Filippov Cc: linux-xtensa@linux-xtensa.org Acked-by: Max Filippov Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210302062214.29627-31-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman

tty: xtensa/iss, don't reassign to tty->port

2021-03-10T08:34:08Z

We already do tty_port_link_device in rs_init, so we don't need to reassign a port to tty->port. It would be too late in tty::ops::open anyway. Cc: Chris Zankel Cc: Max Filippov Cc: linux-xtensa@linux-xtensa.org Acked-by: Max Filippov Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210302062214.29627-30-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman