Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=70dea47da12932cc512e09124a836ddd3499ab39
Commit:     70dea47da12932cc512e09124a836ddd3499ab39
Parent:     504ca43e5e681b8ed3837f11ea458eb145a82e4e
Author:     Hollis Blanchard <[EMAIL PROTECTED]>
AuthorDate: Mon Sep 17 05:56:47 2007 -0500
Committer:  Josh Boyer <[EMAIL PROTECTED]>
CommitDate: Wed Sep 19 21:13:17 2007 -0500

    [POWERPC] 4xx: Implement udbg_getc() for 440
    
    Implement udbg_getc() for 440, which fixes xmon input.
    
    Signed-off-by: Hollis Blanchard <[EMAIL PROTECTED]>
    Acked-by: David Gibson <[EMAIL PROTECTED]>
    Signed-off-by: Josh Boyer <[EMAIL PROTECTED]>
---
 arch/powerpc/kernel/udbg_16550.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
index 7afab5b..833a3d0 100644
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -206,11 +206,22 @@ static void udbg_44x_as1_putc(char c)
        }
 }
 
+static int udbg_44x_as1_getc(void)
+{
+       if (udbg_comport) {
+               while ((as1_readb(&udbg_comport->lsr) & LSR_DR) == 0)
+                       ; /* wait for char */
+               return as1_readb(&udbg_comport->rbr);
+       }
+       return -1;
+}
+
 void __init udbg_init_44x_as1(void)
 {
        udbg_comport =
                (volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
 
        udbg_putc = udbg_44x_as1_putc;
+       udbg_getc = udbg_44x_as1_getc;
 }
 #endif /* CONFIG_PPC_EARLY_DEBUG_44x */
-
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