kernel/linux.git/drivers/tty/serial/etraxfs-uart.c, branch linux-4.4.y

serial: etraxfs-uart: Fix crash

2015-11-21T00:19:54+00:00

Since commit 7d8c70d8048c ("serial: mctrl-gpio: rename init function"), crisv32 either do not build or crash as follows. Unable to handle kernel NULL pointer dereference Linux 4.3.0-rc7-next-20151101 #1 Sun Nov 1 11:41:28 PST 2015 ... Call Trace: [] show_stack+0x0/0x9e [] printk+0x0/0x2c [] show_registers+0x14a/0x1c2 [] printk+0x0/0x2c [] die_if_kernel+0x7c/0x9e [] do_page_fault+0x32e/0x3e6 [] of_get_property+0x0/0x2c [] of_irq_parse_raw+0x12a/0x376 [] of_get_property+0x0/0x2c [] get_page_from_freelist+0x73e/0x856 [] of_get_property+0x0/0x2c [] d_mmu_refill+0x10a/0x112 [] devm_kmalloc+0x40/0x56 [] add_dr+0xc/0x1c [] devm_add_action+0x2/0x4e [] mctrl_gpio_init_noauto+0x1c/0x76 [] mctrl_gpio_init+0x22/0x110 The function call in the etraxfs-uart driver was not renamed, possibly due to interference with commit 7b9c5162c182 ("serial: etraxfs-uart: use mctrl_gpio helpers for handling modem signals"). Fixes: 7d8c70d8048c ("serial: mctrl-gpio: rename init function") Signed-off-by: Guenter Roeck Acked-by: Uwe Kleine-König Acked-by: Niklas Cassel Signed-off-by: Greg Kroah-Hartman

serial: etraxfs-uart: use mctrl_gpio helpers for handling modem signals

2015-08-05T05:07:20+00:00

In order to use the mctrl_gpio helpers, we change the DT bindings: ri-gpios renamed to rng-gpios. cd-gpios renamed to dcd-gpios. However, no in-tree dts/dtsi specifies these, so no worries. Signed-off-by: Niklas Cassel Reviewed-by: Guenter Roeck Tested-by: Guenter Roeck Acked-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

serial: etraxfs-uart: remove empty functions

2015-08-05T05:07:19+00:00

Implementing enable_ms is optional by serial_core. check_modem_status is just an empty local function. Signed-off-by: Niklas Cassel Reviewed-by: Guenter Roeck Tested-by: Guenter Roeck Signed-off-by: Greg Kroah-Hartman

Merge 4.2-rc4 into tty-next

2015-07-27T18:12:39+00:00

Other serial driver work wants to build on patches now in 4.2-rc4 so merge the branch so this can properly happen. Signed-off-by: Greg Kroah-Hartman

serial: etraxfs-uart: Fix release etraxfs_uart_ports

2015-07-23T22:25:38+00:00

In probe, we use dev_id as array index of etraxfs_uart_ports and store the index in port->line. So etraxfs_uart_ports[port->line] should be released when unload the module. Signed-off-by: Axel Lin Acked-by: Niklas Cassel Acked-by: Jesper Nilsson Signed-off-by: Greg Kroah-Hartman

serial: etraxfs-uart: Convert to uart_console_device instead of open-coded

2015-07-23T22:24:12+00:00

The implementation of cris_console_device() is exactly the same as uart_console_device(), so let's switch to use uart_console_device(). Signed-off-by: Axel Lin Acked-by: Niklas Cassel Acked-by: Jesper Nilsson Signed-off-by: Greg Kroah-Hartman

serial: driver for ETRAX FS UART

2015-02-07T10:43:16+00:00

This is the last missing piece to get a kernel booting to a prompt in qemu-cris. Signed-off-by: Niklas Cassel Acked-by: Jesper Nilsson Signed-off-by: Greg Kroah-Hartman