forked from luck/tmp_suning_uos_patched
spi/dw_spi: bug fix in wait_till_not_busy()
Make the driver wait at least for 1 jiffie before issuing the warning, no matter what HZ is set to Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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@ -161,7 +161,7 @@ static inline void mrst_spi_debugfs_remove(struct dw_spi *dws)
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static void wait_till_not_busy(struct dw_spi *dws)
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{
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unsigned long end = jiffies + usecs_to_jiffies(1000);
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unsigned long end = jiffies + 1 + usecs_to_jiffies(1000);
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while (time_before(jiffies, end)) {
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if (!(dw_readw(dws, sr) & SR_BUSY))
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