The patch titled
atmel_serial: use existing console options only if BRG is running
has been added to the -mm tree. Its filename is
atmel_serial-use-existing-console-options-only-if-brg-is-running.patch
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------------------------------------------------------
Subject: atmel_serial: use existing console options only if BRG is running
From: Haavard Skinnemoen <[EMAIL PROTECTED]>
If BRGR is zero, the baud rate generator isn't running, so the boot loader
can't have initialized the port.
Signed-off-by: Haavard Skinnemoen <[EMAIL PROTECTED]>
Acked-by: Andrew Victor <[EMAIL PROTECTED]>
Tested-by: Marc Pignat <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/serial/atmel_serial.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff -puN
drivers/serial/atmel_serial.c~atmel_serial-use-existing-console-options-only-if-brg-is-running
drivers/serial/atmel_serial.c
---
a/drivers/serial/atmel_serial.c~atmel_serial-use-existing-console-options-only-if-brg-is-running
+++ a/drivers/serial/atmel_serial.c
@@ -835,13 +835,13 @@ static void __init atmel_console_get_opt
{
unsigned int mr, quot;
-// TODO: CR is a write-only register
-// unsigned int cr;
-//
-// cr = UART_GET_CR(port) & (ATMEL_US_RXEN | ATMEL_US_TXEN);
-// if (cr == (ATMEL_US_RXEN | ATMEL_US_TXEN)) {
-// /* ok, the port was enabled */
-// }
+ /*
+ * If the baud rate generator isn't running, the port wasn't
+ * initialized by the boot loader.
+ */
+ quot = UART_GET_BRGR(port);
+ if (!quot)
+ return;
mr = UART_GET_MR(port) & ATMEL_US_CHRL;
if (mr == ATMEL_US_CHRL_8)
@@ -861,7 +861,6 @@ static void __init atmel_console_get_opt
* lower than one of those, as it would make us fall through
* to a much lower baud rate than we really want.
*/
- quot = UART_GET_BRGR(port);
*baud = port->uartclk / (16 * (quot - 1));
}
_
Patches currently in -mm which might be from [EMAIL PROTECTED] are
git-avr32.patch
fix-timerfd-breakage-on-avr32-was-re-fix-variable-use-in-avr32-pte_alloc_one.patch
git-mtd.patch
gpiolib-add-drivers-gpio-directory.patch
gpiolib-add-gpio-provider-infrastructure.patch
gpiolib-update-documentation-gpiotxt.patch
gpiolib-pxa-platform-support.patch
gpiolib-pcf857x-i2c-gpio-expander-support.patch
gpiolib-mcp23s08-spi-gpio-expander-support.patch
gpiolib-pca9539-i2c-gpio-expander-support.patch
gpiolib-deprecate-obsolete-pca9539-driver.patch
gpiolib-avr32-at32ap-platform-support.patch
config_highpte-vs-sub-page-page-tables-avr32-fix.patch
read_current_time-cleanups.patch
fix-__const_udelay-declaration-and-definition-mismatches.patch
atmel_spi-throughput-improvement.patch
atmel_spi-chain-dma-transfers.patch
atmel_spi-chain-dma-transfers-update.patch
atmel_spi-fix-dmachain-oops-with-debug-enabled.patch
add-have_oprofile.patch
atmel_lcdfb-validate-display-timings.patch
sanitize-the-type-of-struct-useru_ar0.patch
add-cmpxchg_local-to-avr32.patch
tty-let-architectures-override-the-user-kernel-macros.patch
maintainers-add-haavard-as-maintainer-of-the-atmel_serial-driver.patch
atmel_serial-clean-up-the-code.patch
atmel_serial-use-cpu_relax-when-busy-waiting.patch
atmel_serial-use-existing-console-options-only-if-brg-is-running.patch
atmel_serial-fix-bugs-in-probe-error-path-and-remove.patch
atmel_serial-split-the-interrupt-handler.patch
atmel_serial-add-dma-support.patch
atmel_serial-use-container_of-instead-of-direct-cast.patch
atmel_serial-show-tty-name-in-proc-interrupts.patch
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