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Thomas Bogendoerfer 8ed89cfc86 parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs 
commit 33f9e02495 upstream.

Enabling parport pc driver on a B2600 (and probably other 64bit PARISC
systems) produced following BUG:

CPU: 0 PID: 1 Comm: swapper Not tainted 4.12.0-rc5-30198-g1132d5e #156
task: 000000009e050000 task.stack: 000000009e04c000

     YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001101111111100001111 Not tainted
r00-03  000000ff0806ff0f 000000009e04c990 0000000040871b78 000000009e04cac0
r04-07  0000000040c14de0 ffffffffffffffff 000000009e07f098 000000009d82d200
r08-11  000000009d82d210 0000000000000378 0000000000000000 0000000040c345e0
r12-15  0000000000000005 0000000040c345e0 0000000000000000 0000000040c9d5e0
r16-19  0000000040c345e0 00000000f00001c4 00000000f00001bc 0000000000000061
r20-23  000000009e04ce28 0000000000000010 0000000000000010 0000000040b89e40
r24-27  0000000000000003 0000000000ffffff 000000009d82d210 0000000040c14de0
r28-31  0000000000000000 000000009e04ca90 000000009e04cb40 0000000000000000
sr00-03  0000000000000000 0000000000000000 0000000000000000 0000000000000000
sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000

IASQ: 0000000000000000 0000000000000000 IAOQ: 00000000404aece0 00000000404aece4
 IIR: 03ffe01f    ISR: 0000000010340000  IOR: 000001781304cac8
 CPU:        0   CR30: 000000009e04c000 CR31: 00000000e2976de2
 ORIG_R28: 0000000000000200
 IAOQ[0]: sba_dma_supported+0x80/0xd0
 IAOQ[1]: sba_dma_supported+0x84/0xd0
 RP(r2): parport_pc_probe_port+0x178/0x1200

Cause is a call to dma_coerce_mask_and_coherenet in parport_pc_probe_port,
which PARISC DMA API doesn't handle very nicely. This commit gives back
DMA_ERROR_CODE for DMA API calls, if device isn't capable of DMA
transaction.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2017-07-21 07:42:20 +02:00
..
Kconfig PCI: Include pci/hotplug Kconfig directly from pci/Kconfig 2016-03-08 15:10:48 -06:00
Makefile
…
README.dino Update broken web addresses in the kernel. 2010-10-18 11:03:14 +02:00
asp.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ccio-dma.c parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs 2017-07-21 07:42:20 +02:00
ccio-rm-dma.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dino.c parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs 2017-07-21 07:42:20 +02:00
eisa.c parisc: Convert irq namespace 2011-03-29 14:48:08 +02:00
eisa_eeprom.c eisa_eeprom: switch to fixed_size_llseek() 2013-06-29 12:57:29 +04:00
eisa_enumerator.c drivers: Initialize resource entry to zero 2016-01-30 09:49:58 +01:00
gsc.c parisc: Convert irq namespace 2011-03-29 14:48:08 +02:00
gsc.h parisc: remove obsolete hw_interrupt_type 2009-07-03 03:34:08 +00:00
hppb.c drivers/parisc: Use printf extension %pR for struct resource 2013-02-20 22:47:24 +01:00
iommu-helpers.h parisc iommu: fix panic due to trying to allocate too large region 2015-12-12 16:07:25 +01:00
iosapic.c parisc/irq: Use access helper irq_data_get_affinity_mask() 2015-07-31 22:20:04 +02:00
iosapic_private.h
…
lasi.c parisc: drivers/parisc/: make code static 2009-01-05 18:15:24 +00:00
lba_pci.c parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs 2017-07-21 07:42:20 +02:00
led.c procfs: new helper - PDE_DATA(inode) 2013-04-09 14:13:32 -04:00
pdc_stable.c parisc: pdc_stable.c: Avoid potential stack overflows 2014-09-21 22:31:08 +02:00
power.c sched, cleanup, treewide: Remove set_current_state(TASK_RUNNING) after schedule() 2014-09-19 12:35:17 +02:00
sba_iommu.c parisc: DMA API: return error instead of BUG_ON for dma ops on non dma devs 2017-07-21 07:42:20 +02:00
superio.c parisc: %pf is only for function pointers 2015-04-24 13:45:54 +02:00
wax.c parisc: drivers/parisc/: make code static 2009-01-05 18:15:24 +00:00

README.dino 

/*
** HP VISUALIZE Workstation PCI Bus Defect
**
** "HP has discovered a potential system defect that can affect
** the behavior of five models of HP VISUALIZE workstations when
** equipped with third-party or customer-installed PCI I/O expansion
** cards. The defect is limited to the HP C180, C160, C160L, B160L,
** and B132L VISUALIZE workstations, and will only be encountered
** when data is transmitted through PCI I/O expansion cards on the
** PCI bus. HP-supplied graphics cards that utilize the PCI bus are
** not affected."
**
** http://h20000.www2.hp.com/bizsupport/TechSupport/Home.jsp?locale=en_US&prodTypeId=12454&prodSeriesId=44443
**
**	Product		First Good Serial Number
**  C200/C240 (US)	US67350000
**B132L+/B180 (US)	US67390000
**   C200 (Europe)	3713G01000
**  B180L (Europe)	3720G01000
**
** Note that many boards were fixed/replaced under a free replacement
** program. Assume a machine is only "suspect" until proven otherwise.
**
** "The pci_check program will also be available as application
**  patch PHSS_12295"
*/