Fenghua Yu 0806a6afe1 dmaengine: idxd: Register dsa_bus_type before registering idxd sub-drivers ... [ Upstream commit 88928addee ] idxd sub-drivers belong to bus dsa_bus_type. Thus, dsa_bus_type must be registered in dsa bus init before idxd drivers can be registered. But the order is wrong when both idxd and idxd_bus are builtin drivers. In this case, idxd driver is compiled and linked before idxd_bus driver. Since the initcall order is determined by the link order, idxd sub-drivers are registered in idxd initcall before dsa_bus_type is registered in idxd_bus initcall. idxd initcall fails: [ 21.562803] calling idxd_init_module+0x0/0x110 @ 1 [ 21.570761] Driver 'idxd' was unable to register with bus_type 'dsa' because the bus was not initialized. [ 21.586475] initcall idxd_init_module+0x0/0x110 returned -22 after 15717 usecs [ 21.597178] calling dsa_bus_init+0x0/0x20 @ 1 To fix the issue, compile and link idxd_bus driver before idxd driver to ensure the right registration order. Fixes: d9e5481fca ("dmaengine: dsa: move dsa_bus_type out of idxd driver to standalone") Reported-by: Michael Prinke <michael.prinke@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lijun Pan <lijun.pan@intel.com> Tested-by: Lijun Pan <lijun.pan@intel.com> Link: https://lore.kernel.org/r/20230924162232.1409454-1-fenghua.yu@intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-11-20 11:52:10 +01:00
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Makefile	dmaengine: idxd: Register dsa_bus_type before registering idxd sub-drivers	2023-11-20 11:52:10 +01:00
bus.c	…
cdev.c	…
compat.c	…
device.c	dmaengine: idxd: use spin_lock_irqsave before wait_event_lock_irq	2023-10-19 23:08:58 +02:00
dma.c	…
idxd.h	…
init.c	…
irq.c	…
perfmon.c	…
perfmon.h	…
registers.h	…
submit.c	…
sysfs.c	dmaengine: idxd: Modify the dependence of attribute pasid_enabled	2023-09-13 09:42:58 +02:00