linux/drivers/tty, branch v6.7

serial: 8250_dw: Add ACPI ID for Granite Rapids-D UART

2023-12-07T01:48:56Z

Granite Rapids-D has an additional UART that is enumerated via ACPI. Add ACPI ID for it. Signed-off-by: Andy Shevchenko Cc: stable Link: https://lore.kernel.org/r/20231205195524.2705965-1-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman

serial: ma35d1: Validate console index before assignment

2023-12-07T01:48:45Z

The console is immediately assigned to the ma35d1 port without checking its index. This oversight can lead to out-of-bounds errors when the index falls outside the valid '0' to MA35_UART_NR range. Such scenario trigges ran error like the following: UBSAN: array-index-out-of-bounds in drivers/tty/serial/ma35d1_serial.c:555:51 index -1 is out of range for type 'uart_ma35d1_port [17] Check the index before using it and bail out with a warning. Fixes: 930cbf92db01 ("tty: serial: Add Nuvoton ma35d1 serial driver support") Signed-off-by: Andi Shyti Cc: Jacky Huang Cc: # v6.5+ Link: https://lore.kernel.org/r/20231204163804.1331415-2-andi.shyti@kernel.org Signed-off-by: Greg Kroah-Hartman

ARM: PL011: Fix DMA support

2023-11-23T20:22:46Z

Since there is no guarantee that the memory returned by dma_alloc_coherent() is associated with a 'struct page', using the architecture specific phys_to_page() is wrong, but using virt_to_page() would be as well. Stop using sg lists altogether and just use the *_single() functions instead. This also simplifies the code a bit since the scatterlists in this driver always have only one entry anyway. https://lore.kernel.org/lkml/86db0fe5-930d-4cbb-bd7d-03367da38951@app.fastmail.com/ Use consistent names for dma buffers gc: Add a commit log from the initial thread: https://lore.kernel.org/lkml/86db0fe5-930d-4cbb-bd7d-03367da38951@app.fastmail.com/ Use consistent names for dma buffers Fixes: cb06ff102e2d7 ("ARM: PL011: Add support for Rx DMA buffer polling.") Signed-off-by: Arnd Bergmann Tested-by: Gregory CLEMENT Signed-off-by: Gregory CLEMENT Cc: stable Link: https://lore.kernel.org/r/20231122171503.235649-1-gregory.clement@bootlin.com Signed-off-by: Greg Kroah-Hartman

serial: sc16is7xx: address RX timeout interrupt errata

2023-11-23T20:21:25Z

This device has a silicon bug that makes it report a timeout interrupt but no data in the FIFO. The datasheet states the following in the errata section 18.1.4: "If the host reads the receive FIFO at the same time as a time-out interrupt condition happens, the host might read 0xCC (time-out) in the Interrupt Indication Register (IIR), but bit 0 of the Line Status Register (LSR) is not set (means there is no data in the receive FIFO)." The errata description seems to indicate it concerns only polled mode of operation when reading bit 0 of the LSR register. However, tests have shown and NXP has confirmed that the RXLVL register also yields 0 when the bug is triggered, and hence the IRQ driven implementation in this driver is equally affected. This bug has hit us on production units and when it does, sc16is7xx_irq() would spin forever because sc16is7xx_port_irq() keeps seeing an interrupt in the IIR register that is not cleared because the driver does not call into sc16is7xx_handle_rx() unless the RXLVL register reports at least one byte in the FIFO. Fix this by always reading one byte from the FIFO when this condition is detected in order to clear the interrupt. This approach was confirmed to be correct by NXP through their support channels. Tested by: Hugo Villeneuve Signed-off-by: Daniel Mack Co-Developed-by: Maxim Popov Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20231123072818.1394539-1-daniel@zonque.org Signed-off-by: Greg Kroah-Hartman

serial: 8250: 8250_omap: Clear UART_HAS_RHR_IT_DIS bit

2023-11-23T20:21:10Z

This fixes commit 439c7183e5b9 ("serial: 8250: 8250_omap: Disable RX interrupt after DMA enable") which unfortunately set the UART_HAS_RHR_IT_DIS bit in the UART_OMAP_IER2 register and never cleared it. Cc: stable@vger.kernel.org Fixes: 439c7183e5b9 ("serial: 8250: 8250_omap: Disable RX interrupt after DMA enable") Signed-off-by: Ronald Wahl Reviewed-by: Vignesh Raghavendra Link: https://lore.kernel.org/r/20231031110909.11695-1-rwahl@gmx.de Signed-off-by: Greg Kroah-Hartman

serial: 8250_omap: Add earlycon support for the AM654 UART controller

2023-11-23T20:20:56Z

Currently there is no support for earlycon on the AM654 UART controller. This commit adds it. Signed-off-by: Ronald Wahl Reviewed-by: Vignesh Raghavendra Link: https://lore.kernel.org/r/20231031131242.15516-1-rwahl@gmx.de Cc: stable Signed-off-by: Greg Kroah-Hartman

serial: 8250: 8250_omap: Do not start RX DMA on THRI interrupt

2023-11-23T20:20:16Z

Starting RX DMA on THRI interrupt is too early because TX may not have finished yet. This change is inspired by commit 90b8596ac460 ("serial: 8250: Prevent starting up DMA Rx on THRI interrupt") and fixes DMA issues I had with an AM62 SoC that is using the 8250 OMAP variant. Cc: stable@vger.kernel.org Fixes: c26389f998a8 ("serial: 8250: 8250_omap: Add DMA support for UARTs on K3 SoCs") Signed-off-by: Ronald Wahl Reviewed-by: Vignesh Raghavendra Link: https://lore.kernel.org/r/20231101171431.16495-1-rwahl@gmx.de Signed-off-by: Greg Kroah-Hartman

Merge tag 'mips_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2023-11-10T17:19:46Z

Pull MIPS updates from Thomas Bogendoerfer: - removed AR7 platform support - cleanups and fixes * tag 'mips_6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: AR7: remove platform watchdog: ar7_wdt: remove driver to prepare for platform removal vlynq: remove bus driver mtd: parsers: ar7: remove support serial: 8250: remove AR7 support arch: mips: remove ReiserFS from defconfig MIPS: lantiq: Remove unnecessary include of MIPS: lantiq: Fix pcibios_plat_dev_init() "no previous prototype" warning MIPS: KVM: Fix a build warning about variable set but not used MIPS: Remove dead code in relocate_new_kernel mips: dts: ralink: mt7621: rename to GnuBee GB-PC1 and GnuBee GB-PC2 mips: dts: ralink: mt7621: define each reset as an item mips: dts: ingenic: Remove unneeded probe-type properties MIPS: loongson32: Remove dma.h and nand.h

Merge tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2023-11-04T01:44:25Z

Pull tty and serial updates from Greg KH: "Here is the big set of tty/serial driver changes for 6.7-rc1. Included in here are: - console/vgacon cleanups and removals from Arnd - tty core and n_tty cleanups from Jiri - lots of 8250 driver updates and cleanups - sc16is7xx serial driver updates - dt binding updates - first set of port lock wrapers from Thomas for the printk fixes coming in future releases - other small serial and tty core cleanups and updates All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (193 commits) serdev: Replace custom code with device_match_acpi_handle() serdev: Simplify devm_serdev_device_open() function serdev: Make use of device_set_node() tty: n_gsm: add copyright Siemens Mobility GmbH tty: n_gsm: fix race condition in status line change on dead connections serial: core: Fix runtime PM handling for pending tx vgacon: fix mips/sibyte build regression dt-bindings: serial: drop unsupported samsung bindings tty: serial: samsung: drop earlycon support for unsupported platforms tty: 8250: Add note for PX-835 tty: 8250: Fix IS-200 PCI ID comment tty: 8250: Add Brainboxes Oxford Semiconductor-based quirks tty: 8250: Add support for Intashield IX cards tty: 8250: Add support for additional Brainboxes PX cards tty: 8250: Fix up PX-803/PX-857 tty: 8250: Fix port count of PX-257 tty: 8250: Add support for Intashield IS-100 tty: 8250: Add support for Brainboxes UP cards tty: 8250: Add support for additional Brainboxes UC cards tty: 8250: Remove UC-257 and UC-431 ...

Merge tag 'sysctl-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

2023-11-02T06:51:41Z

Pull sysctl updates from Luis Chamberlain: "To help make the move of sysctls out of kernel/sysctl.c not incur a size penalty sysctl has been changed to allow us to not require the sentinel, the final empty element on the sysctl array. Joel Granados has been doing all this work. On the v6.6 kernel we got the major infrastructure changes required to support this. For v6.7-rc1 we have all arch/ and drivers/ modified to remove the sentinel. Both arch and driver changes have been on linux-next for a bit less than a month. It is worth re-iterating the value: - this helps reduce the overall build time size of the kernel and run time memory consumed by the kernel by about ~64 bytes per array - the extra 64-byte penalty is no longer inncurred now when we move sysctls out from kernel/sysctl.c to their own files For v6.8-rc1 expect removal of all the sentinels and also then the unneeded check for procname == NULL. The last two patches are fixes recently merged by Krister Johansen which allow us again to use softlockup_panic early on boot. This used to work but the alias work broke it. This is useful for folks who want to detect softlockups super early rather than wait and spend money on cloud solutions with nothing but an eventual hung kernel. Although this hadn't gone through linux-next it's also a stable fix, so we might as well roll through the fixes now" * tag 'sysctl-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (23 commits) watchdog: move softlockup_panic back to early_param proc: sysctl: prevent aliased sysctls from getting passed to init intel drm: Remove now superfluous sentinel element from ctl_table array Drivers: hv: Remove now superfluous sentinel element from ctl_table array raid: Remove now superfluous sentinel element from ctl_table array fw loader: Remove the now superfluous sentinel element from ctl_table array sgi-xp: Remove the now superfluous sentinel element from ctl_table array vrf: Remove the now superfluous sentinel element from ctl_table array char-misc: Remove the now superfluous sentinel element from ctl_table array infiniband: Remove the now superfluous sentinel element from ctl_table array macintosh: Remove the now superfluous sentinel element from ctl_table array parport: Remove the now superfluous sentinel element from ctl_table array scsi: Remove now superfluous sentinel element from ctl_table array tty: Remove now superfluous sentinel element from ctl_table array xen: Remove now superfluous sentinel element from ctl_table array hpet: Remove now superfluous sentinel element from ctl_table array c-sky: Remove now superfluous sentinel element from ctl_talbe array powerpc: Remove now superfluous sentinel element from ctl_table arrays riscv: Remove now superfluous sentinel element from ctl_table array x86/vdso: Remove now superfluous sentinel element from ctl_table array ...