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Commit f7886d93 authored by Lei wang's avatar Lei wang Committed by Gerrit - the friendly Code Review server
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hwrng: refine hwrng delay for retry 



Per internal test, about 5us-6us is enough for hwrng prepare
the random data. 440us udelay is much more then needed, So
reduce the udelay time for better performance.

Change-Id: I714b67ca6e4f97717db537c799936ea31c96e475
Signed-off-by: default avatarLei wang <leiwan@codeaurora.org>
parent 5e999608

drivers/char/hw_random/msm_rng.c

+2 −2
Original line number Diff line number Diff line
@@ -41,8 +41,8 @@ 
#define MAX_HW_FIFO_DEPTH 16                     /* FIFO is 16 words deep */

#define MAX_HW_FIFO_SIZE (MAX_HW_FIFO_DEPTH * 4) /* FIFO is 32 bits wide  */



#define RETRY_MAX_CNT		5	/* max retry times to read register */

#define RETRY_DELAY_INTERVAL	440	/* retry delay interval in us */

#define RETRY_MAX_CNT		500	/* max retry times to read register */

#define RETRY_DELAY_INTERVAL	6	/* retry delay interval in us */



struct msm_rng_device {

	struct platform_device *pdev;