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Johan Hovold 22169bcca7 tty: fix return value for unsupported ioctls 
[ Upstream commit 1b8b20868a6d64cfe8174a21b25b74367bdf0560 ]

Drivers should return -ENOTTY ("Inappropriate I/O control operation")
when an ioctl isn't supported, while -EINVAL is used for invalid
arguments.

Fix up the TIOCMGET, TIOCMSET and TIOCGICOUNT helpers which returned
-EINVAL when a tty driver did not implement the corresponding
operations.

Note that the TIOCMGET and TIOCMSET helpers predate git and do not get a
corresponding Fixes tag below.

Fixes: d281da7ff6f7 ("tty: Make tiocgicount a handler")
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210407095208.31838-3-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-05-20 16:07:50 +08:00
..
acpi ACPI: scan: Use unique number for instance_no 2021-04-12 12:53:31 +08:00
asm-generic vmlinux.lds.h: add DWARF v5 sections 2021-04-12 12:52:10 +08:00
clocksource Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
crypto crypto: api - check for ERR pointers in crypto_destroy_tfm() 2021-05-20 16:07:23 +08:00
drm iommu/vt-d: Move intel_iommu_gfx_mapped to Intel IOMMU header 2021-03-16 16:41:21 +08:00
dt-bindings Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
keys KEYS: Don't write out to userspace while holding key semaphore 2021-03-16 16:26:42 +08:00
kvm Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
linux tty: fix return value for unsupported ioctls 2021-05-20 16:07:50 +08:00
math-emu Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
media media: rc: compile rc-cec.c into rc-core 2021-04-12 12:53:01 +08:00
misc Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
net Bluetooth: verify AMP hci_chan before amp_destroy 2021-05-20 16:07:38 +08:00
pcmcia Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ras Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
rdma RDMA/umem: Fix signature of stub ib_umem_find_best_pgsz() 2021-03-16 16:38:49 +08:00
scsi Fix misc new gcc warnings 2021-05-20 16:07:35 +08:00
soc irqchip/eznps: Fix build error for !ARC700 builds 2021-03-16 16:35:56 +08:00
sound ALSA: hda: intel-nhlt: verify config type 2021-04-12 12:52:52 +08:00
target scsi: target: core: Add cmd length set before cmd complete 2021-04-12 12:53:04 +08:00
trace writeback: Drop I_DIRTY_TIME_EXPIRE 2021-04-12 12:51:42 +08:00
uapi tty: actually undefine superseded ASYNC flags 2021-05-20 16:07:50 +08:00
vdso Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
video Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
xen Xen/gntdev: correct error checking in gntdev_map_grant_pages() 2021-04-12 12:52:07 +08:00