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From 7f3f1b3f979a96182b2eb44eeea86993506108d5 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?=C5=81ukasz=20Stelmach?= <l.stelmach@samsung.com>
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Date: Tue, 7 Jan 2014 15:00:22 +0100
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Subject: [PATCH] gpt-auto-generator: skip nonexistent devices
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The devices we work with have eMMC chips for storage. The chips
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provide four "hardware" partitions. The first is /dev/mmcblk0, it
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takes almost whole space and holds a GPT with several real partitions
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(/dev/mmcblk0p?). Then there are three block devices (mmcblk0boot0,
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mmcblk0boot1, rpmb) that are part of the same hardware as mmcblk0 that
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are presented by the kernel as children of the latter. That relationship
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makes gpt-auto-generator try to peek them but since they are not GPT
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partitions blkid_do_safeprobe() returns -2 making verify_gpt_parition()
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function return -ENODEV.
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---
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src/gpt-auto-generator/gpt-auto-generator.c | 3 +++
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1 file changed, 3 insertions(+)
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diff --git a/src/gpt-auto-generator/gpt-auto-generator.c b/src/gpt-auto-generator/gpt-auto-generator.c
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index d2b4213..1f09aed 100644
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--- a/src/gpt-auto-generator/gpt-auto-generator.c
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+++ b/src/gpt-auto-generator/gpt-auto-generator.c
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@@ -306,6 +306,9 @@ static int enumerate_partitions(struct udev *udev, dev_t dev) {
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r = verify_gpt_partition(node, &type_id, &nr, &fstype);
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if (r < 0) {
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+ /* skip child devices which are not detected properly */
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+ if (r == -ENODEV)
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+ continue;
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log_error("Failed to verify GPT partition %s: %s",
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node, strerror(-r));
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udev_device_unref(q);
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