Re: [PATCH net-next v5 4/5] net: dsa: mxl862xx: recover switch stuck in MCUboot rescue mode
From: Andrew Lunn <andrew@lunn.ch>
Date: 2026-07-30 21:34:36
Also in:
linux-doc, lkml
+static int mxl862xx_sb_pdi_poll_drain(struct mxl862xx_priv *priv,
+ unsigned long timeout_ms)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms);
+ int ret;
+
+ do {
+ ret = mxl862xx_smdio_read(priv, MXL862XX_SB_PDI_STAT);
+ if (ret < 0)
+ return ret;
+ if ((u16)ret == MXL862XX_SB_PDI_READY)
+ return MXL862XX_DRAIN_READY;
+ if ((u16)ret == 0)
+ return MXL862XX_DRAIN_FEED;
+ usleep_range(50, 150);
+ } while (time_before(jiffies, timeout));
Again, iopoll.h should be better.
Andrew