WSL2-Linux-Kernel/drivers/tty/hvc
Uwe Kleine-König 386a966f5c vio: make remove callback return void
The driver core ignores the return value of struct bus_type::remove()
because there is only little that can be done. To simplify the quest to
make this function return void, let struct vio_driver::remove() return
void, too. All users already unconditionally return 0, this commit makes
it obvious that returning an error code is a bad idea.

Note there are two nominally different implementations for a vio bus:
one in arch/sparc/kernel/vio.c and the other in
arch/powerpc/platforms/pseries/vio.c. This patch only adapts the powerpc
one.

Before this patch for a device that was bound to a driver without a
remove callback vio_cmo_bus_remove(viodev) wasn't called. As the device
core still considers the device unbound after vio_bus_remove() returns
calling this unconditionally is the consistent behaviour which is
implemented here.

Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Acked-by: Lijun Pan <ljp@linux.ibm.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[mpe: Drop unneeded hvcs_remove() forward declaration, squash in
 change from sfr to drop ibmvnic_remove() forward declaration]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210225221834.160083-1-uwe@kleine-koenig.org
2021-03-02 22:41:23 +11:00
..
Kconfig tty: hvc: fix link error with CONFIG_SERIAL_CORE_CONSOLE=n 2020-09-27 14:17:43 +02:00
Makefile
hvc_console.c tty: hvc_console, fix crashes on parallel open/close 2020-05-27 10:55:36 +02:00
hvc_console.h
hvc_dcc.c
hvc_irq.c
hvc_iucv.c
hvc_opal.c tty: hvc: hvc_opal: Staticify function invoked by reference 2020-11-06 10:54:05 +01:00
hvc_riscv_sbi.c
hvc_rtas.c
hvc_udbg.c
hvc_vio.c tty: hvc: hvc_vio: Staticify function invoked only by reference 2020-11-06 10:54:05 +01:00
hvc_xen.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
hvcs.c vio: make remove callback return void 2021-03-02 22:41:23 +11:00
hvsi.c tty: hvc: Return proper error code from console ->setup() hook 2020-06-25 14:23:06 +02:00
hvsi_lib.c