diff mbox series

[v6,2/3] serial: port: Add support of PNP IRQ to __uart_read_properties()

Message ID e6dc33e399f119e6430bca48223cb2127930939b.1712646750.git.albanhuang@tencent.com
State New
Headers show
Series serial: 8250_pnp: Support configurable reg shift property | expand

Commit Message

Guanbing Huang April 9, 2024, 7:44 a.m. UTC 
From: Guanbing Huang <albanhuang@tencent.com>

The function __uart_read_properties doesn't cover PNP devices, so add IRQ
processing for PNP devices in the branch.

Signed-off-by: Guanbing Huang <albanhuang@tencent.com>
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Bing Fan <tombinfan@tencent.com>
Tested-by: Linheng Du <dylanlhdu@tencent.com>
---
v5 -> v6: fix the issue that the cover letter is not chained with the patch series
v4 -> v5: change "pnp" and "irq" in the commit message to uppercase, modify the subject
          to start with "serial: port:", modify the location of the header file pnp.h 

 drivers/tty/serial/serial_port.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

Comments

kernel test robot April 9, 2024, 9:48 p.m. UTC | #1 
Hi Guanbing,

kernel test robot noticed the following build errors:

[auto build test ERROR on tty/tty-testing]
[also build test ERROR on tty/tty-next tty/tty-linus usb/usb-testing usb/usb-next usb/usb-linus linus/master v6.9-rc3 next-20240409]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Guanbing-Huang/PNP-Add-dev_is_pnp-macro/20240409-154558
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing
patch link:    https://lore.kernel.org/r/e6dc33e399f119e6430bca48223cb2127930939b.1712646750.git.albanhuang%40tencent.com
patch subject: [PATCH v6 2/3] serial: port: Add support of PNP IRQ to __uart_read_properties()
config: openrisc-defconfig (https://download.01.org/0day-ci/archive/20240410/202404100523.b06UvPSB-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240410/202404100523.b06UvPSB-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404100523.b06UvPSB-lkp@intel.com/

All errors (new ones prefixed by >>):

   or1k-linux-ld: drivers/tty/serial/serial_port.o: in function `__uart_read_properties':
>> serial_port.c:(.text+0x230): undefined reference to `pnp_bus_type'
>> or1k-linux-ld: serial_port.c:(.text+0x234): undefined reference to `pnp_bus_type'
diff mbox series

Patch

diff --git a/drivers/tty/serial/serial_port.c b/drivers/tty/serial/serial_port.c
index 22b9eeb23e68..8504bae1d2c9 100644
--- a/drivers/tty/serial/serial_port.c
+++ b/drivers/tty/serial/serial_port.c
@@ -11,6 +11,7 @@ 
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/pnp.h>
 #include <linux/property.h>
 #include <linux/serial_core.h>
 #include <linux/spinlock.h>
@@ -221,7 +222,11 @@  static int __uart_read_properties(struct uart_port *port, bool use_defaults)
 
 	if (dev_is_platform(dev))
 		ret = platform_get_irq(to_platform_device(dev), 0);
-	else
+	else if (dev_is_pnp(dev)) {
+		ret = pnp_irq(to_pnp_dev(dev), 0);
+		if (ret < 0)
+			ret = -ENXIO;
+	} else
 		ret = fwnode_irq_get(dev_fwnode(dev), 0);
 	if (ret == -EPROBE_DEFER)
 		return ret;