Commits
Fabio Estevam committed 29c2edb42bf
mmc: fsl_esdhc: Avoid infinite loop in esdhc_send_cmd_common() The following hang is observed on a Hummingboard 2 MicroSOM i2eX iMX6D - rev 1.3 with no eMMC populated on board: U-Boot SPL 2018.11+gf6206f8587 (Nov 16 2018 - 00:56:34 +0000) Trying to boot from MMC1 U-Boot 2018.11+gf6206f8587 (Nov 16 2018 - 00:56:34 +0000) CPU: Freescale i.MX6D rev1.5 996 MHz (running at 792 MHz) CPU: Extended Commercial temperature grade (-20C to 105C) at 33C Reset cause: POR Board: MX6 HummingBoard2 DRAM: 1 GiB MMC: FSL_SDHC: 0, FSL_SDHC: 1 Loading Environment from MMC... *** Warning - bad CRC, using default environment No panel detected: default to HDMI Display: HDMI (1024x768) In: serial Out: serial Err: serial ---> hangs which is caused by the following infinite loop inside esdhc_send_cmd_common() while (!(esdhc_read32(®s->irqstat) & flags)) ; Instead of looping forever, provide an exit path so that a timeout error can be propagated in the case irqstat does not report any interrupts, which may happen when no eMMC is populated on board. Reported-by: Ricardo Salveti <rsalveti@rsalveti.net> Signed-off-by: Fabio Estevam <festevam@gmail.com> Tested-by: Peter Robinson <pbrobinson@gmail.com> Tested-by: Ricardo Salveti <rsalveti@rsalveti.net>