kernel/drivers/net/hamradio, branch linux-6.9.y

hamradio: replace deprecated strncpy with strscpy_pad

2023-10-18T00:59:55Z

strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. We expect both hi.data.modename and hi.data.drivername to be NUL-terminated based on its usage with sprintf: | sprintf(hi.data.modename, "%sclk,%smodem,fclk=%d,bps=%d%s", | bc->cfg.intclk ? "int" : "ext", | bc->cfg.extmodem ? "ext" : "int", bc->cfg.fclk, bc->cfg.bps, | bc->cfg.loopback ? ",loopback" : ""); Note that this data is copied out to userspace with: | if (copy_to_user(data, &hi, sizeof(hi))) ... however, the data was also copied FROM the user here: | if (copy_from_user(&hi, data, sizeof(hi))) Considering the above, a suitable replacement is strscpy_pad() as it guarantees NUL-termination on the destination buffer while also NUL-padding (which is good+wanted behavior when copying data to userspace). Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://github.com/KSPP/linux/issues/90 Signed-off-by: Justin Stitt Reviewed-by: Kees Cook Reviewed-by: Simon Horman Link: https://lore.kernel.org/r/20231016-strncpy-drivers-net-hamradio-baycom_epp-c-v2-1-39f72a72de30@google.com Signed-off-by: Jakub Kicinski

hamradio: baycom: remove useless link in Kconfig

2023-09-22T07:17:05Z

The Kconfig help text for baycom drivers suggests that more information on the hardware can be found at . The website now includes no information on their ham radio products other than a mention that they were once produced by the company, saying: "The amateur radio equipment is now no longer part and business of BayCom GmbH" As there is no information relavent to the baycom driver on the site, remove the link. Signed-off-by: Peter Lafreniere Signed-off-by: David S. Miller

tty: use u8 for flags

2023-08-11T19:12:45Z

This makes all those 'char's an explicit 'u8'. This is part of the continuing unification of chars and flags to be consistent u8. This approaches tty_port_default_receive_buf(). Note that we do not change signedness as we compile with -funsigned-char. Signed-off-by: "Jiri Slaby (SUSE)" Cc: William Hubbs Cc: Chris Brannon Cc: Kirk Reiser Cc: Samuel Thibault Cc: Marcel Holtmann Cc: Johan Hedberg Cc: Luiz Augusto von Dentz Cc: Dmitry Torokhov Cc: Arnd Bergmann Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: Max Staudt Cc: Wolfgang Grandegger Cc: Marc Kleine-Budde Cc: Dario Binacchi Cc: Andreas Koensgen Cc: Jeremy Kerr Cc: Matt Johnston Cc: Krzysztof Kozlowski Cc: Liam Girdwood Cc: Mark Brown Cc: Jaroslav Kysela Cc: Takashi Iwai Acked-by: Mark Brown Link: https://lore.kernel.org/r/20230810091510.13006-18-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

tty: use u8 for chars

2023-08-11T19:12:45Z

This makes all those 'unsigned char's an explicit 'u8'. This is part of the continuing unification of chars and flags to be consistent u8. This approaches tty_port_default_receive_buf(). Flags to be next. Signed-off-by: "Jiri Slaby (SUSE)" Cc: William Hubbs Cc: Chris Brannon Cc: Kirk Reiser Cc: Samuel Thibault Cc: Dmitry Torokhov Cc: Arnd Bergmann Cc: Max Staudt Cc: Wolfgang Grandegger Cc: Marc Kleine-Budde Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: Dario Binacchi Cc: Andreas Koensgen Cc: Jeremy Kerr Cc: Matt Johnston Cc: Liam Girdwood Cc: Mark Brown Cc: Jaroslav Kysela Cc: Takashi Iwai Cc: Peter Ujfalusi Acked-by: Mark Brown Link: https://lore.kernel.org/r/20230810091510.13006-17-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

tty: make tty_ldisc_ops::buf() hooks operate on size_t

2023-08-11T19:12:45Z

Count passed to tty_ldisc_ops::receive_buf*(), ::lookahead_buf(), and returned from ::receive_buf2() is expected to be size_t. So set it to size_t to unify with the rest of the code. Signed-off-by: "Jiri Slaby (SUSE)" Cc: William Hubbs Cc: Chris Brannon Cc: Kirk Reiser Cc: Samuel Thibault Cc: Marcel Holtmann Cc: Johan Hedberg Cc: Luiz Augusto von Dentz Cc: Dmitry Torokhov Cc: Arnd Bergmann Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: Max Staudt Cc: Wolfgang Grandegger Cc: Marc Kleine-Budde Cc: Dario Binacchi Cc: Andreas Koensgen Cc: Jeremy Kerr Cc: Matt Johnston Cc: Krzysztof Kozlowski Cc: Liam Girdwood Cc: Mark Brown Cc: Jaroslav Kysela Cc: Takashi Iwai Acked-by: Mark Brown Link: https://lore.kernel.org/r/20230810091510.13006-16-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

hamradio: drop ISA_DMA_API dependency

2023-04-19T12:11:41Z

It looks like the dependency got added accidentally in commit a553260618d8 ("[PATCH] ISA DMA Kconfig fixes - part 3"). Unlike the previously removed dmascc driver, the scc driver never used DMA. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller

hamradio: baycom_epp: Do not use x86-specific rdtsc()

2022-12-19T09:27:10Z

Use get_cycles() which is provided by pretty much every arch. The UML build works too because get_cycles() is a simple "return 0;" because the rdtsc() is optimized away there. Signed-off-by: Borislav Petkov (AMD) Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-12-13T08:49:29Z

Merge in the left-over fixes before the net-next pull-request. net/mptcp/subflow.c d3295fee3c75 ("mptcp: use proper req destructor for IPv6") 36b122baf6a8 ("mptcp: add subflow_v(4,6)_send_synack()") Signed-off-by: Paolo Abeni

hamradio: don't call dev_kfree_skb() under spin_lock_irqsave()

2022-12-12T09:56:17Z

It is not allowed to call kfree_skb() or consume_skb() from hardware interrupt context or with hardware interrupts being disabled. It should use dev_kfree_skb_irq() or dev_consume_skb_irq() instead. The difference between them is free reason, dev_kfree_skb_irq() means the SKB is dropped in error and dev_consume_skb_irq() means the SKB is consumed in normal. In scc_discard_buffers(), dev_kfree_skb() is called to discard the SKBs, so replace it with dev_kfree_skb_irq(). In scc_net_tx(), dev_kfree_skb() is called to drop the SKB that exceed queue length, so replace it with dev_kfree_skb_irq(). Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Yang Yingliang Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2022-11-11T01:43:53Z

drivers/net/can/pch_can.c ae64438be192 ("can: dev: fix skb drop check") 1dd1b521be85 ("can: remove obsolete PCH CAN driver") https://lore.kernel.org/all/20221110102509.1f7d63cc@canb.auug.org.au/ Signed-off-by: Jakub Kicinski

kernel/drivers/net/hamradio, branch linux-6.9.y

hamradio: replace deprecated strncpy with strscpy_pad

hamradio: baycom: remove useless link in Kconfig

tty: use u8 for flags

tty: use u8 for chars

tty: make tty_ldisc_ops::*buf*() hooks operate on size_t

hamradio: drop ISA_DMA_API dependency

hamradio: baycom_epp: Do not use x86-specific rdtsc()

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

hamradio: don't call dev_kfree_skb() under spin_lock_irqsave()

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

tty: make tty_ldisc_ops::buf() hooks operate on size_t