ata: sata_mv: Replace mdelay with usleep_range in mv_reset_channel
After checking all possible call chains to mv_reset_channel here, my tool finds that mv_reset_channel is never called in atomic context, namely never in an interrupt handler or holding a spinlock. Thus mdelay can be replaced with usleep_range to avoid busy wait. This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
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@ -3596,7 +3596,7 @@ static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
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hpriv->ops->phy_errata(hpriv, mmio, port_no);
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if (IS_GEN_I(hpriv))
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mdelay(1);
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usleep_range(500, 1000);
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}
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static void mv_pmp_select(struct ata_port *ap, int pmp)
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