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Commit ed35e092 authored by Haojun Bao's avatar Haojun Bao Committed by Greg Kroah-Hartman
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serial: pxa: Do not tweak clock in pxa serial write() function 



The write() function could be used by printk(), which is atomic and
tweaking clock there can cause "BUG: sleeping function called from
invalid context".

Signed-off-by: default avatarBao Haojun <hjbao@marvell.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b786337d

drivers/tty/serial/pxa.c

+0 −2
Original line number Diff line number Diff line
@@ -672,7 +672,6 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count) 
	unsigned long flags;

	int locked = 1;



	clk_prepare_enable(up->clk);



	local_irq_save(flags);

	if (up->port.sysrq)
@@ -701,7 +700,6 @@ serial_pxa_console_write(struct console *co, const char *s, unsigned int count) 
		spin_unlock(&up->port.lock);

	local_irq_restore(flags);



	clk_disable_unprepare(up->clk);

}



#ifdef CONFIG_CONSOLE_POLL