mirror of https://gitee.com/openkylin/linux.git
Serial driver fixes for 3.5-rc4
Here are 3 patches resolving a boot regression (the mop500 fix), a build warning fix, and a kernel-doc fix. All tiny, but should go into the final 3.5 release. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iEYEABECAAYFAk/iNosACgkQMUfUDdst+ykedgCeLhpFrq5dI19tbhEmCroFs4sx f+4An29dz2bGkjeViDNkmaBC7msPzLNc =EBge -----END PGP SIGNATURE----- Merge tag 'tty-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull serial driver fixes from Greg Kroah-Hartman: "Here are 3 patches resolving a boot regression (the mop500 fix), a build warning fix, and a kernel-doc fix. All tiny, but should go into the final 3.5 release. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'tty-3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: serial/amba-pl011: move custom pin control to driver serial: fix serial_txx9.c build warning/typo serial: fix kernel-doc warnings in 8250.c
This commit is contained in:
Linus Torvalds
commit
a1821f774d
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@ -580,43 +580,12 @@ static void ux500_uart0_reset(void)
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udelay(1);
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}
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/* This needs to be referenced by callbacks */
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struct pinctrl *u0_p;
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struct pinctrl_state *u0_def;
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struct pinctrl_state *u0_sleep;
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static void ux500_uart0_init(void)
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{
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int ret;
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if (IS_ERR(u0_p) || IS_ERR(u0_def))
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return;
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ret = pinctrl_select_state(u0_p, u0_def);
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if (ret)
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pr_err("could not set UART0 defstate\n");
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}
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static void ux500_uart0_exit(void)
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{
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int ret;
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if (IS_ERR(u0_p) || IS_ERR(u0_sleep))
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return;
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ret = pinctrl_select_state(u0_p, u0_sleep);
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if (ret)
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pr_err("could not set UART0 idlestate\n");
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}
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static struct amba_pl011_data uart0_plat = {
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#ifdef CONFIG_STE_DMA40
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.dma_filter = stedma40_filter,
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.dma_rx_param = &uart0_dma_cfg_rx,
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.dma_tx_param = &uart0_dma_cfg_tx,
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#endif
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.init = ux500_uart0_init,
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.exit = ux500_uart0_exit,
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.reset = ux500_uart0_reset,
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};
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@ -638,28 +607,7 @@ static struct amba_pl011_data uart2_plat = {
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static void __init mop500_uart_init(struct device *parent)
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{
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struct amba_device *uart0_device;
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uart0_device = db8500_add_uart0(parent, &uart0_plat);
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if (uart0_device) {
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u0_p = pinctrl_get(&uart0_device->dev);
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if (IS_ERR(u0_p))
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dev_err(&uart0_device->dev,
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"could not get UART0 pinctrl\n");
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else {
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u0_def = pinctrl_lookup_state(u0_p,
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PINCTRL_STATE_DEFAULT);
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if (IS_ERR(u0_def)) {
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dev_err(&uart0_device->dev,
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"could not get UART0 defstate\n");
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}
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u0_sleep = pinctrl_lookup_state(u0_p,
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PINCTRL_STATE_SLEEP);
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if (IS_ERR(u0_sleep))
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dev_err(&uart0_device->dev,
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"could not get UART0 idlestate\n");
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}
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}
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db8500_add_uart0(parent, &uart0_plat);
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db8500_add_uart1(parent, &uart1_plat);
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db8500_add_uart2(parent, &uart2_plat);
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}
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@ -3113,7 +3113,7 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port *
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/**
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* serial8250_register_8250_port - register a serial port
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* @port: serial port template
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* @up: serial port template
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*
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* Configure the serial port specified by the request. If the
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* port exists and is in use, it is hung up and unregistered
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@ -133,6 +133,10 @@ struct pl011_dmatx_data {
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struct uart_amba_port {
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struct uart_port port;
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struct clk *clk;
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/* Two optional pin states - default & sleep */
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struct pinctrl *pinctrl;
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struct pinctrl_state *pins_default;
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struct pinctrl_state *pins_sleep;
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const struct vendor_data *vendor;
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unsigned int dmacr; /* dma control reg */
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unsigned int im; /* interrupt mask */
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@ -1312,6 +1316,14 @@ static int pl011_startup(struct uart_port *port)
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unsigned int cr;
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int retval;
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/* Optionaly enable pins to be muxed in and configured */
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if (!IS_ERR(uap->pins_default)) {
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retval = pinctrl_select_state(uap->pinctrl, uap->pins_default);
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if (retval)
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dev_err(port->dev,
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"could not set default pins\n");
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}
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retval = clk_prepare(uap->clk);
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if (retval)
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goto out;
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@ -1420,6 +1432,7 @@ static void pl011_shutdown(struct uart_port *port)
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{
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struct uart_amba_port *uap = (struct uart_amba_port *)port;
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unsigned int cr;
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int retval;
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/*
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* disable all interrupts
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@ -1462,6 +1475,14 @@ static void pl011_shutdown(struct uart_port *port)
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*/
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clk_disable(uap->clk);
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clk_unprepare(uap->clk);
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/* Optionally let pins go into sleep states */
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if (!IS_ERR(uap->pins_sleep)) {
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retval = pinctrl_select_state(uap->pinctrl, uap->pins_sleep);
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if (retval)
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dev_err(port->dev,
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"could not set pins to sleep state\n");
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}
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if (uap->port.dev->platform_data) {
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struct amba_pl011_data *plat;
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@ -1792,6 +1813,14 @@ static int __init pl011_console_setup(struct console *co, char *options)
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if (!uap)
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return -ENODEV;
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/* Allow pins to be muxed in and configured */
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if (!IS_ERR(uap->pins_default)) {
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ret = pinctrl_select_state(uap->pinctrl, uap->pins_default);
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if (ret)
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dev_err(uap->port.dev,
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"could not set default pins\n");
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}
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ret = clk_prepare(uap->clk);
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if (ret)
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return ret;
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@ -1844,7 +1873,6 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
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{
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struct uart_amba_port *uap;
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struct vendor_data *vendor = id->data;
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struct pinctrl *pinctrl;
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void __iomem *base;
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int i, ret;
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@ -1869,11 +1897,20 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id)
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goto free;
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}
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pinctrl = devm_pinctrl_get_select_default(&dev->dev);
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if (IS_ERR(pinctrl)) {
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ret = PTR_ERR(pinctrl);
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uap->pinctrl = devm_pinctrl_get(&dev->dev);
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if (IS_ERR(uap->pinctrl)) {
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ret = PTR_ERR(uap->pinctrl);
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goto unmap;
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}
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uap->pins_default = pinctrl_lookup_state(uap->pinctrl,
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PINCTRL_STATE_DEFAULT);
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if (IS_ERR(uap->pins_default))
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dev_err(&dev->dev, "could not get default pinstate\n");
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uap->pins_sleep = pinctrl_lookup_state(uap->pinctrl,
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PINCTRL_STATE_SLEEP);
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if (IS_ERR(uap->pins_sleep))
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dev_dbg(&dev->dev, "could not get sleep pinstate\n");
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uap->clk = clk_get(&dev->dev, NULL);
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if (IS_ERR(uap->clk)) {
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@ -466,7 +466,7 @@ static void serial_txx9_break_ctl(struct uart_port *port, int break_state)
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spin_unlock_irqrestore(&up->port.lock, flags);
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}
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#if defined(CONFIG_SERIAL_TXX9_CONSOLE) || (CONFIG_CONSOLE_POLL)
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#if defined(CONFIG_SERIAL_TXX9_CONSOLE) || defined(CONFIG_CONSOLE_POLL)
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/*
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* Wait for transmitter & holding register to empty
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*/
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