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Groups > linux.kernel > #1300778
| From | Stanimir Varbanov <svarbanov@mm-sol.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v5 1/5] PCI: designware: ensure ATU is enabled before IO/conf space accesses |
| Date | 2016-01-04 15:40 +0100 |
| Message-ID | <qNesG-4F6-7@gated-at.bofh.it> (permalink) |
| References | <qH2ud-5E7-11@gated-at.bofh.it> <qH2ud-5E7-17@gated-at.bofh.it> <qH4w2-6U7-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 12/18/2015 04:41 PM, Pratyush Anand wrote: > On Fri, Dec 18, 2015 at 6:08 PM, Stanimir Varbanov > <stanimir.varbanov@linaro.org> wrote: >> There is no guarantees that enabling ATU will hit the hardware >> immediately, and subsequent accesses to configuration / IO spaces >> are reliable. So fixing this by read back PCIE_ATU_CR2 register >> just after writing. >> >> Without such a fix the PCI device enumeration during kernel boot >> is not reliable, and reading configuration space for particular >> PCI device on the bus returns zero aka no device. >> >> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> > > Acked-by: Pratyush Anand <pratyush.anand@gmail.com> Bjorn, Do you want to resend the whole patchset with collected acks and tested tags? -- regards, Stan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: [PATCH v5 1/5] PCI: designware: ensure ATU is enabled before IO/conf space accesses Stanimir Varbanov <svarbanov@mm-sol.com> - 2016-01-04 15:40 +0100
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