BMC/Intel-BMC/linux.git/drivers/tty, branch dev-4.7

serial: 8250: Add flag so drivers can avoid probe

2017-03-27T22:51:02+00:00

The probing of THRE irq behaviour assumes the other end will be reading bytes out of the buffer in order to probe the port at driver init. In some cases the other end cannot be relied upon to read these bytes, so provide a flag for them to skip this step. Bit 16 was chosen as the flags are a int and the top bits are taken. Acked-by: Benjamin Herrenschmidt Signed-off-by: Joel Stanley

tty: aspeed-vuart: Add IRQF_SHARED to flags

2017-03-27T22:49:11+00:00

All of the LPC devices share an IRQ line. When other LPC devices (such as the BT) have enabled IRQs we receive them unexpectedly in the vuart driver before it is ready. And the IRQF_SHARED flag to the vuart driver so we ignore interrupts until we are ready to handle them. Reported-by: Anton Blanchard Signed-off-by: Joel Stanley

Merge tag 'v4.7.10' into dev-4.7

2016-10-24T07:02:44+00:00

This is the 4.7.10 stable release

serial: 8250_port: fix runtime PM use in __do_stop_tx_rs485()

2016-10-22T10:06:46+00:00

commit b3965767d86cf4534dfe1affbde0453d3224ed7f upstream. There are calls to serial8250_rpm_{get|put}() in __do_stop_tx_rs485() that are certainly placed in a wrong location. I dunno how it had been tested with runtime PM enabled because it is obvious "sleep in atomic context" error. Besides that serial8250_rpm_get() is called immediately after an IO just happened. It implies that the device is already powered on, see implementation of serial8250_em485_rts_after_send() and serial8250_clear_fifos() for the details. There is no bug have been seen due to, as I can guess, use of auto suspend mode when scheduled transaction to suspend is invoked quite lately than it's needed for a few writes to the port. It might be possible to trigger a warning if stop_tx_timer fires when device is suspended. Refactor the code to use runtime PM only in case of timer function. Fixes: 0c66940d584d ("tty/serial/8250: fix RS485 half-duplex RX") Cc: "Matwey V. Kornilov" Tested-by: Yegor Yefremov Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman

serial: 8250_dw: Check the data->pclk when get apb_pclk

2016-10-22T10:06:46+00:00

commit e16b46f190a22587898b331f9d58583b0b166c9a upstream. It should check the data->pclk, not data->clk when get apb_pclk. Fixes: c8ed99d4f6a8("serial: 8250_dw: Add support for deferred probing") Signed-off-by: Kefeng Wang Tested-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman

serial: imx: Fix DCD reading

2016-10-22T10:06:46+00:00

commit 4b75f80003617fe35771a9e27022e8fbd6a41875 upstream. The USR2_DCDIN bit is tested for in register usr1. As the name suggests the usr2 register should be used instead. This fixes reading the Carrier detect status. Signed-off-by: Sascha Hauer Fixes: 90ebc4838666 ("serial: imx: repair and complete handshaking") Acked-by: Uwe Kleine-König Reviewed-by: Fabio Estevam Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.7.6' into dev-4.7

2016-10-06T00:55:38+00:00

This is the 4.7.6 stable release

serial: 8250: added acces i/o products quad and octal serial cards

2016-09-24T08:09:31+00:00

commit c8d192428f52f244130b84650ad616df09f2b1e1 upstream. Added devices ids for acces i/o products quad and octal serial cards that make use of existing Pericom PI7C9X7954 and PI7C9X7958 configurations . Signed-off-by: Jimi Damon Signed-off-by: Greg Kroah-Hartman

serial: 8250_mid: fix divide error bug if baud rate is 0

2016-09-24T08:09:31+00:00

commit 47b34d2ef266e2c283b514d65c8963c2ccd42474 upstream. Since the commit c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID"), the 8250 driver crashes in the byt_set_termios() function with a divide error. This is caused by the fact that a baud rate of 0 (B0) is not handled properly. Fix it by falling back to B9600 in this case. Reported-by: "Mendez Salinas, Fernando" Fixes: c1a67b48f6a5 ("serial: 8250_pci: replace switch-case by formula for Intel MID") Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.7.2' into dev-4.7

2016-08-29T07:59:30+00:00

This is the 4.7.2 stable release Signed-off-by: Joel Stanley