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| author | Xie He <xie.he.0141@gmail.com> | 2020-11-05 10:34:34 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-08 01:13:44 +0300 |
| commit | f8ae7bbec726f4d09ca19ecea45ea147b8801e10 (patch) | |
| tree | b7ed1cf9460da0ac7303e32e71058c7d5f515ee6 /arch | |
| parent | 0012eeb370f8c33e8cfb58c1fa7d3e1307940d64 (diff) | |
| download | linux-f8ae7bbec726f4d09ca19ecea45ea147b8801e10.tar.xz | |
net: x25_asy: Delete the x25_asy driver
This driver transports LAPB (X.25 link layer) frames over TTY links.
I can safely say that this driver has no actual user because it was
not working at all until:
commit 8fdcabeac398 ("drivers/net/wan/x25_asy: Fix to make it work")
The code in its current state still has problems:
1.
The uses of "struct x25_asy" in x25_asy_unesc (when receiving) and in
x25_asy_write_wakeup (when sending) are not protected by locks against
x25_asy_change_mtu's changing of the transmitting/receiving buffers.
Also, all "netif_running" checks in this driver are not protected by
locks against the ndo_stop function.
2.
The driver stops all TTY read/write when the netif is down.
I think this is not right because this may cause the last outgoing frame
before the netif goes down to be incompletely transmitted, and the first
incoming frame after the netif goes up to be incompletely received.
And there may also be other problems.
I was planning to fix these problems but after recent discussions about
deleting other old networking code, I think we may just delete this
driver, too.
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Acked-by: Martin Schiller <ms@dev.tdt.de>
Link: https://lore.kernel.org/r/20201105073434.429307-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/configs/gpr_defconfig | 1 | ||||
| -rw-r--r-- | arch/mips/configs/mtx1_defconfig | 1 |
2 files changed, 0 insertions, 2 deletions
diff --git a/arch/mips/configs/gpr_defconfig b/arch/mips/configs/gpr_defconfig index 9085f4d6c698..599d5604aabe 100644 --- a/arch/mips/configs/gpr_defconfig +++ b/arch/mips/configs/gpr_defconfig @@ -230,7 +230,6 @@ CONFIG_DSCC4_PCISYNC=y CONFIG_DSCC4_PCI_RST=y CONFIG_DLCI=m CONFIG_LAPBETHER=m -CONFIG_X25_ASY=m # CONFIG_INPUT_KEYBOARD is not set # CONFIG_INPUT_MOUSE is not set # CONFIG_SERIO is not set diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig index 914af125a7fa..dc69b054181c 100644 --- a/arch/mips/configs/mtx1_defconfig +++ b/arch/mips/configs/mtx1_defconfig @@ -380,7 +380,6 @@ CONFIG_DSCC4_PCISYNC=y CONFIG_DSCC4_PCI_RST=y CONFIG_DLCI=m CONFIG_LAPBETHER=m -CONFIG_X25_ASY=m # CONFIG_KEYBOARD_ATKBD is not set CONFIG_KEYBOARD_GPIO=y # CONFIG_INPUT_MOUSE is not set |