Messages in this thread | | | From | "Serge Noiraud" <> | Subject | RT and pci_lock while reading or writing pci bus configuration. | Date | Mon, 20 Feb 2006 15:42:19 +0100 |
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Hi, I have one question : In drivers/pci/access.c we have a global lock for pci configuration access. In pci_bus_read_config_* or pci_bus_write_config_* functions, we acquire a lock. When we call spin_lock_irqsave, we obtain the following message : BUG: scheduling while atomic: IRQ 137/0x00000001/6431 caller is schedule+0x43/0x120 [<c01050ec>] dump_stack+0x1c/0x20 (20) [<c03e7144>] __schedule+0xf44/0x1240 (236) [<c03e7483>] schedule+0x43/0x120 (12) [<c03e855b>] __down_mutex+0x2bb/0x5f0 (112) [<c03ea08c>] _spin_lock_irqsave+0x1c/0x40 (24) [<c023670d>] pci_bus_read_config_word+0x2d/0x70 (24) Do I miss something or is it a BUG ?
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