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| author | Tony Lindgren <tony@atomide.com> | 2023-07-25 08:42:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-01 07:48:55 +0200 |
| commit | d962de6ae51f9b76ad736220077cda83084090b1 (patch) | |
| tree | 956052bc518e0395c0f43a37d93c741ffb37025b /include | |
| parent | 83c35180abfdfb22f3d7703b0c85ad2d442ed2c5 (diff) | |
| download | linux-stable-d962de6ae51f9b76ad736220077cda83084090b1.tar.gz linux-stable-d962de6ae51f9b76ad736220077cda83084090b1.tar.bz2 linux-stable-d962de6ae51f9b76ad736220077cda83084090b1.zip | |
serial: core: Fix serial core port id to not use port->line
The serial core port id should be serial core controller specific port
instance, which is not always the port->line index.
For example, 8250 driver maps a number of legacy ports, and when a
hardware specific device driver takes over, we typically have one
driver instance for each port. Let's instead add port->port_id to
keep track serial ports mapped to each serial core controller instance.
Currently this is only a cosmetic issue for the serial core port device
names. The issue can be noticed looking at /sys/bus/serial-base/devices
for example though. Let's fix the issue to avoid port addressing issues
later on.
Fixes: 84a9582fd203 ("serial: core: Start managing serial controllers to enable runtime PM")
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20230725054216.45696-3-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/serial_core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 201813d888df..a156d2ed8d9e 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -460,6 +460,7 @@ struct uart_port { int (*iso7816_config)(struct uart_port *, struct serial_iso7816 *iso7816); unsigned int ctrl_id; /* optional serial core controller id */ + unsigned int port_id; /* optional serial core port id */ unsigned int irq; /* irq number */ unsigned long irqflags; /* irq flags */ unsigned int uartclk; /* base uart clock */ |