parisc: Drop locking in pdc console code

commit 7dc4dbfe750e1f18c511e73c8ed114da8de9ff85 upstream.

No need to have specific locking for console I/O since
the PDC functions provide an own locking.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # 6.1+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c
index 7d0989f523d031bf74888e4ab96ed22b291ea457..cf3bf82323746864e5d76b87051bf804b1f7e08f 100644 (file)
--- a/arch/parisc/kernel/pdc_cons.c
+++ b/arch/parisc/kernel/pdc_cons.c
@@ -12,37 +12,27 @@
 #include <asm/page.h>          /* for PAGE0 */
 #include <asm/pdc.h>           /* for iodc_call() proto and friends */
 
-static DEFINE_SPINLOCK(pdc_console_lock);
-
 static void pdc_console_write(struct console *co, const char *s, unsigned count)
 {
        int i = 0;
-       unsigned long flags;
 
-       spin_lock_irqsave(&pdc_console_lock, flags);
        do {
                i += pdc_iodc_print(s + i, count - i);
        } while (i < count);
-       spin_unlock_irqrestore(&pdc_console_lock, flags);
 }
 
 #ifdef CONFIG_KGDB
 static int kgdb_pdc_read_char(void)
 {
-       int c;
-       unsigned long flags;
-
-       spin_lock_irqsave(&pdc_console_lock, flags);
-       c = pdc_iodc_getc();
-       spin_unlock_irqrestore(&pdc_console_lock, flags);
+       int c = pdc_iodc_getc();
 
        return (c <= 0) ? NO_POLL_CHAR : c;
 }
 
 static void kgdb_pdc_write_char(u8 chr)
 {
-       if (PAGE0->mem_cons.cl_class != CL_DUPLEX)
-               pdc_console_write(NULL, &chr, 1);
+       /* no need to print char as it's shown on standard console */
+       /* pdc_iodc_print(&chr, 1); */
 }
 
 static struct kgdb_io kgdb_pdc_io_ops = {