kernel.git/drivers/s390/char, branch linux-6.8.y

Merge tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2024-01-18T19:37:24Z

Pull tty / serial updates from Greg KH: "Here is the big set of tty and serial driver changes for 6.8-rc1. As usual, Jiri has a bunch of refactoring and cleanups for the tty core and drivers in here, along with the usual set of rs485 updates (someday this might work properly...) Along with those, in here are changes for: - sc16is7xx serial driver updates - platform driver removal api updates - amba-pl011 driver updates - tty driver binding updates - other small tty/serial driver updates and changes All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (197 commits) serial: sc16is7xx: refactor EFR lock serial: sc16is7xx: reorder code to remove prototype declarations serial: sc16is7xx: refactor FIFO access functions to increase commonality serial: sc16is7xx: drop unneeded MODULE_ALIAS serial: sc16is7xx: replace hardcoded divisor value with BIT() macro serial: sc16is7xx: add explicit return for some switch default cases serial: sc16is7xx: add macro for max number of UART ports serial: sc16is7xx: add driver name to struct uart_driver serial: sc16is7xx: use i2c_get_match_data() serial: sc16is7xx: use spi_get_device_match_data() serial: sc16is7xx: use DECLARE_BITMAP for sc16is7xx_lines bitfield serial: sc16is7xx: improve do/while loop in sc16is7xx_irq() serial: sc16is7xx: remove obsolete loop in sc16is7xx_port_irq() serial: sc16is7xx: set safe default SPI clock frequency serial: sc16is7xx: add check for unsupported SPI modes during probe serial: sc16is7xx: fix invalid sc16is7xx_lines bitfield in case of probe error serial: 8250_exar: Set missing rs485_supported flag serial: omap: do not override settings for RS485 support serial: core, imx: do not set RS485 enabled if it is not supported serial: core: make sure RS485 cannot be enabled when it is not supported ...

tty: con3270: convert to u8 and size_t

2023-12-08T11:02:37Z

Switch character types to u8 and sizes to size_t. To conform to characters/sizes in the rest of the tty layer. Signed-off-by: "Jiri Slaby (SUSE)" Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: linux-s390@vger.kernel.org Link: https://lore.kernel.org/r/20231206073712.17776-10-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

tty: con3215: convert to u8 and size_t

2023-12-08T11:02:37Z

Switch character types to u8 and sizes to size_t. To conform to characters/sizes in the rest of the tty layer. Signed-off-by: "Jiri Slaby (SUSE)" Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: linux-s390@vger.kernel.org Link: https://lore.kernel.org/r/20231206073712.17776-9-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

tty: con3215: drop raw3215_info::ubuffer

2023-11-23T19:16:03Z

clang-struct [1] found raw3215_info::ubuffer unused. It's actually not used since 2004 when we switched to kernel buffers. [1] https://github.com/jirislaby/clang-struct Signed-off-by: "Jiri Slaby (SUSE)" Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: linux-s390@vger.kernel.org Acked-by: Alexander Gordeev Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20231121103626.17772-2-jirislaby@kernel.org Signed-off-by: Greg Kroah-Hartman

s390/uvdevice: Report additional-data length for attestation

2023-11-23T11:15:55Z

Additional data length in the attestation request is an in/out variable. Software provides the capacity of the buffer. Upon successful request, firmware reports the actual bytes written to the additional data in that field. This information is lost, as the length field was not copied back to userspace before. Attestation might fail, if user space did not specify the exact amount of needed bytes required, as this length is part of the attestation measurement. Signed-off-by: Steffen Eiden Reviewed-by: Claudio Imbrenda Reviewed-by: Janosch Frank Link: https://lore.kernel.org/r/20231106124922.3032370-1-seiden@linux.ibm.com Message-Id: <20231106124922.3032370-1-seiden@linux.ibm.com> Signed-off-by: Janosch Frank

s390/sclp: replace deprecated strncpy with strtomem

2023-10-25T13:08:30Z

Let's move away from using strncpy() as it is deprecated [1]. Instead use strtomem() as `e.id` is already marked as nonstring: | char id[4] __nonstring; We don't need strtomem_pad() because `e` is already memset to 0 -- rendering any additional NUL-padding useless. 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 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt Reviewed-by: Kees Cook Link: https://lore.kernel.org/r/20231023-strncpy-drivers-s390-char-sclp-c-v1-1-eaeef80522bb@google.com Signed-off-by: Vasily Gorbik

s390/sclp: handle default case in sclp memory notifier

2023-10-25T13:08:29Z

When new memory notifier types are added in common code and unimplemented on s390, return success instead of EINVAL return code. This prevents breakage when new memory notifier types are added. Reviewed-by: Heiko Carstens Signed-off-by: Sumanth Korikkar Signed-off-by: Vasily Gorbik

s390/ctlreg: add struct ctlreg

2023-09-19T11:26:56Z

Add struct ctlreg to enforce strict type checking / usage for control register functions. Reviewed-by: Alexander Gordeev Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/ctlreg: use local_ctl_load() and local_ctl_store() where possible

2023-09-19T11:26:56Z

Convert all single control register usages of __local_ctl_load() and __local_ctl_store() to local_ctl_load() and local_ctl_store(). This also requires to change the type of some struct lowcore members from __u64 to unsigned long. Reviewed-by: Alexander Gordeev Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/ctlreg: add local and system prefix to some functions

2023-09-19T11:26:56Z

Add local and system prefix to some functions to clarify they change control register contents on either the local CPU or the on all CPUs. This results in the following API: Two defines which load and save multiple control registers. The defines correlate with the following C prototypes: void __local_ctl_load(unsigned long *, unsigned int cr_low, unsigned int cr_high); void __local_ctl_store(unsigned long *, unsigned int cr_low, unsigned int cr_high); Two functions which locally set or clear one bit for a specified control register: void local_ctl_set_bit(unsigned int cr, unsigned int bit); void local_ctl_clear_bit(unsigned int cr, unsigned int bit); Two functions which set or clear one bit for a specified control register on all CPUs: void system_ctl_set_bit(unsigned int cr, unsigned int bit); void system_ctl_clear_bit(unsigend int cr, unsigned int bit); Reviewed-by: Alexander Gordeev Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik