From: Michal Simek michal.simek@xilinx.com
commit 492cc08bc16c44e2e587362ada3f6269dee2be22 upstream.
This reverts commit bed25ac0e2b6ab8f9aed2d20bc9c3a2037311800.
As Johan says, this driver needs a lot more work and these changes are only going in the wrong direction: https://lkml.kernel.org/r/20190523091839.GC568@localhost
Reported-by: Johan Hovold johan@kernel.org Signed-off-by: Michal Simek michal.simek@xilinx.com Cc: stable stable@vger.kernel.org Link: https://lore.kernel.org/r/eb0ec98fecdca9b79c1a3ac0c30c668b6973b193.158590587... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/tty/serial/xilinx_uartps.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-)
--- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -183,7 +183,6 @@ MODULE_PARM_DESC(rx_timeout, "Rx timeout * @pclk: APB clock * @cdns_uart_driver: Pointer to UART driver * @baud: Current baud rate - * @id: Port ID * @clk_rate_change_nb: Notifier block for clock changes * @quirks: Flags for RXBS support. */ @@ -193,7 +192,6 @@ struct cdns_uart { struct clk *pclk; struct uart_driver *cdns_uart_driver; unsigned int baud; - int id; struct notifier_block clk_rate_change_nb; u32 quirks; bool cts_override; @@ -1398,7 +1396,7 @@ MODULE_DEVICE_TABLE(of, cdns_uart_of_mat */ static int cdns_uart_probe(struct platform_device *pdev) { - int rc, irq; + int rc, id, irq; struct uart_port *port; struct resource *res; struct cdns_uart *cdns_uart_data; @@ -1424,18 +1422,18 @@ static int cdns_uart_probe(struct platfo return -ENOMEM;
/* Look for a serialN alias */ - cdns_uart_data->id = of_alias_get_id(pdev->dev.of_node, "serial"); - if (cdns_uart_data->id < 0) - cdns_uart_data->id = 0; + id = of_alias_get_id(pdev->dev.of_node, "serial"); + if (id < 0) + id = 0;
- if (cdns_uart_data->id >= CDNS_UART_NR_PORTS) { + if (id >= CDNS_UART_NR_PORTS) { dev_err(&pdev->dev, "Cannot get uart_port structure\n"); return -ENODEV; }
/* There is a need to use unique driver name */ driver_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s%d", - CDNS_UART_NAME, cdns_uart_data->id); + CDNS_UART_NAME, id); if (!driver_name) return -ENOMEM;
@@ -1443,7 +1441,7 @@ static int cdns_uart_probe(struct platfo cdns_uart_uart_driver->driver_name = driver_name; cdns_uart_uart_driver->dev_name = CDNS_UART_TTY_NAME; cdns_uart_uart_driver->major = CDNS_UART_MAJOR; - cdns_uart_uart_driver->minor = cdns_uart_data->id; + cdns_uart_uart_driver->minor = id; cdns_uart_uart_driver->nr = 1;
#ifdef CONFIG_SERIAL_XILINX_PS_UART_CONSOLE @@ -1454,7 +1452,7 @@ static int cdns_uart_probe(struct platfo
strncpy(cdns_uart_console->name, CDNS_UART_TTY_NAME, sizeof(cdns_uart_console->name)); - cdns_uart_console->index = cdns_uart_data->id; + cdns_uart_console->index = id; cdns_uart_console->write = cdns_uart_console_write; cdns_uart_console->device = uart_console_device; cdns_uart_console->setup = cdns_uart_console_setup; @@ -1476,7 +1474,7 @@ static int cdns_uart_probe(struct platfo * registration because tty_driver structure is not filled. * name_base is 0 by default. */ - cdns_uart_uart_driver->tty_driver->name_base = cdns_uart_data->id; + cdns_uart_uart_driver->tty_driver->name_base = id;
match = of_match_node(cdns_uart_of_match, pdev->dev.of_node); if (match && match->data) {