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-rw-r--r--arch/parisc/kernel/firmware.c27
1 files changed, 17 insertions, 10 deletions
diff --git a/arch/parisc/kernel/firmware.c b/arch/parisc/kernel/firmware.c
index 4ab83d56974d..7177a6cd1b7f 100644
--- a/arch/parisc/kernel/firmware.c
+++ b/arch/parisc/kernel/firmware.c
@@ -1080,6 +1080,9 @@ void pdc_io_reset_devices(void)
spin_unlock_irqrestore(&pdc_lock, flags);
}
+/* locked by pdc_console_lock */
+static int __attribute__((aligned(8))) iodc_retbuf[32];
+static char __attribute__((aligned(64))) iodc_dbuf[4096];
/**
* pdc_iodc_print - Console print using IODC.
@@ -1091,24 +1094,20 @@ void pdc_io_reset_devices(void)
* Since the HP console requires CR+LF to perform a 'newline', we translate
* "\n" to "\r\n".
*/
-int pdc_iodc_print(unsigned char *str, unsigned count)
+int pdc_iodc_print(const unsigned char *str, unsigned count)
{
- /* XXX Should we spinlock posx usage */
static int posx; /* for simple TAB-Simulation... */
- int __attribute__((aligned(8))) iodc_retbuf[32];
- char __attribute__((aligned(64))) iodc_dbuf[4096];
unsigned int i;
unsigned long flags;
- memset(iodc_dbuf, 0, 4096);
- for (i = 0; i < count && i < 2048;) {
+ for (i = 0; i < count && i < 79;) {
switch(str[i]) {
case '\n':
iodc_dbuf[i+0] = '\r';
iodc_dbuf[i+1] = '\n';
i += 2;
posx = 0;
- break;
+ goto print;
case '\t':
while (posx & 7) {
iodc_dbuf[i] = ' ';
@@ -1124,6 +1123,16 @@ int pdc_iodc_print(unsigned char *str, unsigned count)
}
}
+ /* if we're at the end of line, and not already inserting a newline,
+ * insert one anyway. iodc console doesn't claim to support >79 char
+ * lines. don't account for this in the return value.
+ */
+ if (i == 79 && iodc_dbuf[i-1] != '\n') {
+ iodc_dbuf[i+0] = '\r';
+ iodc_dbuf[i+1] = '\n';
+ }
+
+print:
spin_lock_irqsave(&pdc_lock, flags);
real32_call(PAGE0->mem_cons.iodc_io,
(unsigned long)PAGE0->mem_cons.hpa, ENTRY_IO_COUT,
@@ -1142,11 +1151,9 @@ int pdc_iodc_print(unsigned char *str, unsigned count)
*/
int pdc_iodc_getc(void)
{
- unsigned long flags;
- static int __attribute__((aligned(8))) iodc_retbuf[32];
- static char __attribute__((aligned(64))) iodc_dbuf[4096];
int ch;
int status;
+ unsigned long flags;
/* Bail if no console input device. */
if (!PAGE0->mem_kbd.iodc_io)

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