| Message ID | 20210126165835.687514-1-u.kleine-koenig@pengutronix.de |
|---|---|
| Headers | show |
| Series | amba: minor fix and various cleanups | expand |
On Tue, Jan 26, 2021 at 05:58:30PM +0100, Uwe Kleine-König wrote: > From: Uwe Kleine-König <u.kleine-koenig.org@pengutronix.de > > Hello, > > Changes since v2 sent with Message-Id: > 20201124133139.3072124-1-uwe@kleine-koenig.org: > > - Rebase to v5.11-rc1 (which resulted in a few conflicts in > drivers/hwtracing). > - Add various Acks. > - Send to more maintainers directly (which I think is one of the > reasons why there are so few Acks). > > For my taste patch 4 needs some more acks (drivers/char/hw_random, > drivers/dma, drivers/gpu/drm/pl111, drivers/i2c, drivers/mmc, > drivers/vfio, drivers/watchdog and sound/arm have no maintainer feedback > yet). > > My suggestion is to let this series go in via Russell King (who cares > for amba). Once enough Acks are there I can also provide a tag for > merging into different trees. Just tell me if you prefer this solution. > > Would be great if this could make it for v5.12, but I'm aware it's > already late in the v5.11 cycle so it might have to wait for v5.13. I think you need to have a 6th patch which moves the probe/remove/shutdown methods into the bus_type - if you're setting them for every struct device_driver, then there's no point doing that and they may as well be in the bus_type. Apart from that, it looks good.
On Tue, Feb 02, 2021 at 02:53:50PM +0100, Uwe Kleine-König wrote: > Hello, > > the following changes since commit 5c8fe583cce542aa0b84adc939ce85293de36e5e: > > Linux 5.11-rc1 (2020-12-27 15:30:22 -0800) > > are available in the Git repository at: > > https://git.pengutronix.de/git/ukl/linux tags/amba-make-remove-return-void > > for you to fetch changes up to f170b59fedd733b92f58c4d7c8357fbf7601d623: > > amba: Make use of bus_type functions (2021-02-02 14:26:02 +0100) > > I expect this tag to be merged by Russell King as amba maintainer and by > Mathieu Poirier (or Greg Kroah-Hartman?) for coresight as there are some > pending conflicting changes. These are not hard to resolve but also > non-trivial. Tell me if you need assistance for resolving, also if it's only a > second pair of eyes to judge your resolution. > > Best regards, > Uwe > > ---------------------------------------------------------------- > Tag for adaptions to struct amba_driver::remove changing prototype > > ---------------------------------------------------------------- > Uwe Kleine-König (5): > amba: Fix resource leak for drivers without .remove > amba: reorder functions > vfio: platform: simplify device removal > amba: Make the remove callback return void > amba: Make use of bus_type functions > > drivers/amba/bus.c | 234 +++++++++++++++++++++++++++++++++------------------------------ > drivers/char/hw_random/nomadik-rng.c | 3 +- > drivers/dma/pl330.c | 3 +- > drivers/gpu/drm/pl111/pl111_drv.c | 4 +- > drivers/hwtracing/coresight/coresight-catu.c | 3 +- > drivers/hwtracing/coresight/coresight-cpu-debug.c | 4 +- > drivers/hwtracing/coresight/coresight-cti-core.c | 4 +- > drivers/hwtracing/coresight/coresight-etb10.c | 4 +- > drivers/hwtracing/coresight/coresight-etm3x-core.c | 4 +- > drivers/hwtracing/coresight/coresight-etm4x-core.c | 4 +- > drivers/hwtracing/coresight/coresight-funnel.c | 4 +- > drivers/hwtracing/coresight/coresight-replicator.c | 4 +- > drivers/hwtracing/coresight/coresight-stm.c | 4 +- > drivers/hwtracing/coresight/coresight-tmc-core.c | 4 +- > drivers/hwtracing/coresight/coresight-tpiu.c | 4 +- > drivers/i2c/busses/i2c-nomadik.c | 4 +- > drivers/input/serio/ambakmi.c | 3 +- > drivers/memory/pl172.c | 4 +- > drivers/memory/pl353-smc.c | 4 +- > drivers/mmc/host/mmci.c | 4 +- > drivers/rtc/rtc-pl030.c | 4 +- > drivers/rtc/rtc-pl031.c | 4 +- > drivers/spi/spi-pl022.c | 5 +- > drivers/tty/serial/amba-pl010.c | 4 +- > drivers/tty/serial/amba-pl011.c | 3 +- > drivers/vfio/platform/vfio_amba.c | 15 ++-- > drivers/video/fbdev/amba-clcd.c | 4 +- > drivers/watchdog/sp805_wdt.c | 4 +- > include/linux/amba/bus.h | 2 +- > sound/arm/aaci.c | 4 +- > 30 files changed, 157 insertions(+), 198 deletions(-) > > I'm glad to take this through my char/misc tree, as that's where the other coresight changes flow through. So if no one else objects, I will do so... thanks, greg k-h
Hello, we already talked about this via irc, but for the record and the benefit of others: On Tue, Feb 02, 2021 at 10:49:15AM +0000, Russell King - ARM Linux admin wrote: > I think you need to have a 6th patch which moves the > probe/remove/shutdown methods into the bus_type - if you're setting > them for every struct device_driver, then there's no point doing that > and they may as well be in the bus_type. This is implemented in patch 5 already. Best regards Uwe
On Thu, Feb 04, 2021 at 04:52:24PM +0000, Russell King - ARM Linux admin wrote: > On Tue, Feb 02, 2021 at 03:06:05PM +0100, Greg Kroah-Hartman wrote: > > I'm glad to take this through my char/misc tree, as that's where the > > other coresight changes flow through. So if no one else objects, I will > > do so... > > Greg, did you end up pulling this after all? If not, Uwe produced a v2. > I haven't merged v2 yet as I don't know what you've done. I thought you merged this? Did you take v1? I am totally lost here... thanks, greg k-h
Hello Russell, hello Greg, On Thu, Feb 04, 2021 at 07:15:51PM +0100, Uwe Kleine-König wrote: > On Thu, Feb 04, 2021 at 04:59:51PM +0000, Russell King - ARM Linux admin wrote: > > On Thu, Feb 04, 2021 at 05:56:50PM +0100, Greg Kroah-Hartman wrote: > > > On Thu, Feb 04, 2021 at 04:52:24PM +0000, Russell King - ARM Linux admin wrote: > > > > On Tue, Feb 02, 2021 at 03:06:05PM +0100, Greg Kroah-Hartman wrote: > > > > > I'm glad to take this through my char/misc tree, as that's where the > > > > > other coresight changes flow through. So if no one else objects, I will > > > > > do so... > > > > > > > > Greg, did you end up pulling this after all? If not, Uwe produced a v2. > > > > I haven't merged v2 yet as I don't know what you've done. > > > > > > I thought you merged this? > > > > I took v1, and put it in a branch I've promised in the past not to > > rebase/rewind. Uwe is now asking for me to take a v2 or apply a patch > > on top. > > > > The only reason to produce an "immutable" branch is if it's the basis > > for some dependent work and you need that branch merged into other > > people's trees... so the whole "lets produce a v2" is really odd > > workflow... I'm confused about what I should do, and who has to be > > informed which option I take. > > > > I'm rather lost here too. > > Sorry to have cause this confusion. After I saw that my initial tag > missed to adapt a driver I wanted to make it easy for you to fix the > situation. > So I created a patch to fix it and created a second tag with the patch > squashed in. Obviously only one of them have to be picked and I hoped > you (= Russell + Greg) would agree which option to pick. > > My preference would be if you both pick up v2 of the tag to yield a > history that is bisectable without build problems, but if Russell (who > already picked up the broken tag) considers his tree immutable and so > isn't willing to rebase, then picking up the patch is the way to go. OK, the current state is that Russell applied the patch fixing drivers/mailbox/arm_mhuv2.c on top of merging my first tag. So the way forward now is that Greg pulls git://git.armlinux.org.uk/~rmk/linux-arm.git devel-stable which currently points to 860660fd829e ("ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void") , into his tree that contains the hwtracing changes that conflict with my changes. @Greg: Is this good enough, or do you require a dedicated tag to pull that? I think these conflicting hwtracing changes are not yet in any of Greg's trees (at least they are not in next). When I pull https://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git next (currently pointing to 4e73ff249184 ("coresight: etm4x: Handle accesses to TRCSTALLCTLR")) into 860660fd829e, I get a conflict in drivers/hwtracing/coresight/coresight-etm4x-core.c as expected. My resolution looks as follows: diff --cc drivers/hwtracing/coresight/coresight-etm4x-core.c index 82787cba537d,5017d33ba4f5..000000000000 --- a/drivers/hwtracing/coresight/coresight-etm4x-core.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-core.c @@@ -1703,6 -1906,28 +1906,27 @@@ static int __exit etm4_remove_dev(struc cpus_read_unlock(); coresight_unregister(drvdata->csdev); + + return 0; + } + -static int __exit etm4_remove_amba(struct amba_device *adev) ++static void __exit etm4_remove_amba(struct amba_device *adev) + { + struct etmv4_drvdata *drvdata = dev_get_drvdata(&adev->dev); + + if (drvdata) - return etm4_remove_dev(drvdata); - return 0; ++ etm4_remove_dev(drvdata); + } + + static int __exit etm4_remove_platform_dev(struct platform_device *pdev) + { + int ret = 0; + struct etmv4_drvdata *drvdata = dev_get_drvdata(&pdev->dev); + + if (drvdata) + ret = etm4_remove_dev(drvdata); + pm_runtime_disable(&pdev->dev); + return ret; } static const struct amba_id etm4_ids[] = { Best regards Uwe
On Fri, Feb 05, 2021 at 11:18:17AM +0100, Greg Kroah-Hartman wrote: > On Fri, Feb 05, 2021 at 10:37:44AM +0100, Uwe Kleine-König wrote: > > Hello Russell, hello Greg, > > > > On Thu, Feb 04, 2021 at 07:15:51PM +0100, Uwe Kleine-König wrote: > > > On Thu, Feb 04, 2021 at 04:59:51PM +0000, Russell King - ARM Linux admin wrote: > > > > On Thu, Feb 04, 2021 at 05:56:50PM +0100, Greg Kroah-Hartman wrote: > > > > > On Thu, Feb 04, 2021 at 04:52:24PM +0000, Russell King - ARM Linux admin wrote: > > > > > > On Tue, Feb 02, 2021 at 03:06:05PM +0100, Greg Kroah-Hartman wrote: > > > > > > > I'm glad to take this through my char/misc tree, as that's where the > > > > > > > other coresight changes flow through. So if no one else objects, I will > > > > > > > do so... > > > > > > > > > > > > Greg, did you end up pulling this after all? If not, Uwe produced a v2. > > > > > > I haven't merged v2 yet as I don't know what you've done. > > > > > > > > > > I thought you merged this? > > > > > > > > I took v1, and put it in a branch I've promised in the past not to > > > > rebase/rewind. Uwe is now asking for me to take a v2 or apply a patch > > > > on top. > > > > > > > > The only reason to produce an "immutable" branch is if it's the basis > > > > for some dependent work and you need that branch merged into other > > > > people's trees... so the whole "lets produce a v2" is really odd > > > > workflow... I'm confused about what I should do, and who has to be > > > > informed which option I take. > > > > > > > > I'm rather lost here too. > > > > > > Sorry to have cause this confusion. After I saw that my initial tag > > > missed to adapt a driver I wanted to make it easy for you to fix the > > > situation. > > > So I created a patch to fix it and created a second tag with the patch > > > squashed in. Obviously only one of them have to be picked and I hoped > > > you (= Russell + Greg) would agree which option to pick. > > > > > > My preference would be if you both pick up v2 of the tag to yield a > > > history that is bisectable without build problems, but if Russell (who > > > already picked up the broken tag) considers his tree immutable and so > > > isn't willing to rebase, then picking up the patch is the way to go. > > > > OK, the current state is that Russell applied the patch fixing > > drivers/mailbox/arm_mhuv2.c on top of merging my first tag. > > > > So the way forward now is that Greg pulls > > > > git://git.armlinux.org.uk/~rmk/linux-arm.git devel-stable > > > > which currently points to > > > > 860660fd829e ("ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void") > > > > , into his tree that contains the hwtracing changes that conflict with my > > changes. @Greg: Is this good enough, or do you require a dedicated tag > > to pull that? > > > > I think these conflicting hwtracing changes are not yet in any of Greg's > > trees (at least they are not in next). > > > > When I pull > > > > https://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git next > > > > (currently pointing to 4e73ff249184 ("coresight: etm4x: Handle accesses > > to TRCSTALLCTLR")) into 860660fd829e, I get a conflict in > > drivers/hwtracing/coresight/coresight-etm4x-core.c as expected. My > > resolution looks as follows: > > Ok, my resolution looked a bit different. > > Can you pull my char-misc-testing branch and verify I got this all > pulled in correctly? minor side-note: mentioning the repo url would have simplified that test. I looked at https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-testing commit 0573d3fa48640f0fa6b105ff92dcb02b94d6c1ab now. I didn't compile test, but I'm willing to bet your resolution is wrong. You have no return statement in etm4_remove_dev() but its return type is int and etm4_remove_amba() still returns int but should return void. Best regards Uwe
From: Uwe Kleine-König <u.kleine-koenig.org@pengutronix.de Hello, Changes since v2 sent with Message-Id: 20201124133139.3072124-1-uwe@kleine-koenig.org: - Rebase to v5.11-rc1 (which resulted in a few conflicts in drivers/hwtracing). - Add various Acks. - Send to more maintainers directly (which I think is one of the reasons why there are so few Acks). For my taste patch 4 needs some more acks (drivers/char/hw_random, drivers/dma, drivers/gpu/drm/pl111, drivers/i2c, drivers/mmc, drivers/vfio, drivers/watchdog and sound/arm have no maintainer feedback yet). My suggestion is to let this series go in via Russell King (who cares for amba). Once enough Acks are there I can also provide a tag for merging into different trees. Just tell me if you prefer this solution. Would be great if this could make it for v5.12, but I'm aware it's already late in the v5.11 cycle so it might have to wait for v5.13. Best regards Uwe Uwe Kleine-König (5): amba: Fix resource leak for drivers without .remove amba: reorder functions vfio: platform: simplify device removal amba: Make the remove callback return void amba: Make use of bus_type functions drivers/amba/bus.c | 234 +++++++++--------- drivers/char/hw_random/nomadik-rng.c | 3 +- drivers/dma/pl330.c | 3 +- drivers/gpu/drm/pl111/pl111_drv.c | 4 +- drivers/hwtracing/coresight/coresight-catu.c | 3 +- .../hwtracing/coresight/coresight-cpu-debug.c | 4 +- .../hwtracing/coresight/coresight-cti-core.c | 4 +- drivers/hwtracing/coresight/coresight-etb10.c | 4 +- .../coresight/coresight-etm3x-core.c | 4 +- .../coresight/coresight-etm4x-core.c | 4 +- .../hwtracing/coresight/coresight-funnel.c | 4 +- .../coresight/coresight-replicator.c | 4 +- drivers/hwtracing/coresight/coresight-stm.c | 4 +- .../hwtracing/coresight/coresight-tmc-core.c | 4 +- drivers/hwtracing/coresight/coresight-tpiu.c | 4 +- drivers/i2c/busses/i2c-nomadik.c | 4 +- drivers/input/serio/ambakmi.c | 3 +- drivers/memory/pl172.c | 4 +- drivers/memory/pl353-smc.c | 4 +- drivers/mmc/host/mmci.c | 4 +- drivers/rtc/rtc-pl030.c | 4 +- drivers/rtc/rtc-pl031.c | 4 +- drivers/spi/spi-pl022.c | 5 +- drivers/tty/serial/amba-pl010.c | 4 +- drivers/tty/serial/amba-pl011.c | 3 +- drivers/vfio/platform/vfio_amba.c | 15 +- drivers/video/fbdev/amba-clcd.c | 4 +- drivers/watchdog/sp805_wdt.c | 4 +- include/linux/amba/bus.h | 2 +- sound/arm/aaci.c | 4 +- 30 files changed, 157 insertions(+), 198 deletions(-) base-commit: 5c8fe583cce542aa0b84adc939ce85293de36e5e