Handle misconfigured/nonexistent pcidev for comconsole instead of BTX panic.
PR: 203319 Reviewed by: imp jhb MFC after: 2 weeks Sponsored by: Limelight Networks Differential Revision: https://reviews.freebsd.org/D13776
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cb1103025d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=327606
@ -267,6 +267,16 @@ comc_pcidev_handle(uint32_t locator)
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printf("Cannot read bar at 0x%x\n", locator);
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return (CMD_ERROR);
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}
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/*
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* biospci_read_config() sets port == 0xffffffff if the pcidev
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* isn't found on the bus. Check for 0xffffffff and return to not
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* panic in BTX.
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*/
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if (port == 0xffffffff) {
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printf("Cannot find specified pcidev\n");
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return (CMD_ERROR);
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}
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if (!PCI_BAR_IO(port)) {
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printf("Memory bar at 0x%x\n", locator);
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return (CMD_ERROR);
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