[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH] xen/serial: Drop serial_{put,get}c
On Thu, 8 Feb 2024, Michal Orzel wrote: > After removal of gdbstub by commit d182f9feae6d ("x86: Remove gdbstub"), > we no longer have users of serial_{put,get}c functions, so remove them. > > Signed-off-by: Michal Orzel <michal.orzel@xxxxxxx> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> > --- > xen/drivers/char/serial.c | 72 --------------------------------------- > xen/include/xen/serial.h | 10 ------ > 2 files changed, 82 deletions(-) > > diff --git a/xen/drivers/char/serial.c b/xen/drivers/char/serial.c > index 324024c29a10..93e217d34859 100644 > --- a/xen/drivers/char/serial.c > +++ b/xen/drivers/char/serial.c > @@ -196,36 +196,6 @@ static void __serial_putc(struct serial_port *port, char > c) > } > } > > -void serial_putc(int handle, char c) > -{ > - struct serial_port *port; > - unsigned long flags; > - > - if ( handle == -1 ) > - return; > - > - port = &com[handle & SERHND_IDX]; > - if ( !port->driver || !port->driver->putc ) > - return; > - > - spin_lock_irqsave(&port->tx_lock, flags); > - > - if ( (c == '\n') && (handle & SERHND_COOKED) ) > - __serial_putc(port, '\r' | ((handle & SERHND_HI) ? 0x80 : 0x00)); > - > - if ( handle & SERHND_HI ) > - c |= 0x80; > - else if ( handle & SERHND_LO ) > - c &= 0x7f; > - > - __serial_putc(port, c); > - > - if ( port->driver->flush ) > - port->driver->flush(port); > - > - spin_unlock_irqrestore(&port->tx_lock, flags); > -} > - > void serial_puts(int handle, const char *s, size_t nr) > { > struct serial_port *port; > @@ -261,48 +231,6 @@ void serial_puts(int handle, const char *s, size_t nr) > spin_unlock_irqrestore(&port->tx_lock, flags); > } > > -char serial_getc(int handle) > -{ > - struct serial_port *port; > - char c; > - unsigned long flags; > - > - if ( handle == -1 ) > - return '\0'; > - > - port = &com[handle & SERHND_IDX]; > - if ( !port->driver || !port->driver->getc ) > - return '\0'; > - > - do { > - for ( ; ; ) > - { > - spin_lock_irqsave(&port->rx_lock, flags); > - > - if ( port->rxbufp != port->rxbufc ) > - { > - c = port->rxbuf[mask_serial_rxbuf_idx(port->rxbufc++)]; > - spin_unlock_irqrestore(&port->rx_lock, flags); > - break; > - } > - > - if ( port->driver->getc(port, &c) ) > - { > - spin_unlock_irqrestore(&port->rx_lock, flags); > - break; > - } > - > - spin_unlock_irqrestore(&port->rx_lock, flags); > - > - cpu_relax(); > - udelay(100); > - } > - } while ( ((handle & SERHND_LO) && (c & 0x80)) || > - ((handle & SERHND_HI) && !(c & 0x80)) ); > - > - return c & 0x7f; > -} > - > int __init serial_parse_handle(const char *conf) > { > int handle, flags = 0; > diff --git a/xen/include/xen/serial.h b/xen/include/xen/serial.h > index 12ef24351d0f..7548bb73249b 100644 > --- a/xen/include/xen/serial.h > +++ b/xen/include/xen/serial.h > @@ -112,19 +112,9 @@ void serial_endboot(void); > /* Takes a config string and creates a numeric handle on the COM port. */ > int serial_parse_handle(const char *conf); > > -/* Transmit a single character via the specified COM port. */ > -void serial_putc(int handle, char c); > - > /* Transmit a string via the specified COM port. */ > void serial_puts(int handle, const char *s, size_t nr); > > -/* > - * An alternative to registering a character-receive hook. This function > - * will not return until a character is available. It can safely be > - * called with interrupts disabled. > - */ > -char serial_getc(int handle); > - > /* Forcibly prevent serial lockup when the system is in a bad way. */ > /* (NB. This also forces an implicit serial_start_sync()). */ > void serial_force_unlock(int handle); > -- > 2.25.1 >
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