Messages in this thread | | | From | Arnd Bergmann <> | Date | Thu, 26 Mar 2020 12:06:58 +0100 | Subject | Re: [PATCH 1/2] driver core: platform: Initialize dma_parms for platform devices |
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On Wed, Mar 25, 2020 at 12:34 PM Ulf Hansson <ulf.hansson@linaro.org> wrote: > > It's currently the platform driver's responsibility to initialize the > pointer, dma_parms, for its corresponding struct device. The benefit with > this approach allows us to avoid the initialization and to not waste memory > for the struct device_dma_parameters, as this can be decided on a case by > case basis. > > However, it has turned out that this approach is not very practical. Not > only does it lead to open coding, but also to real errors. In principle > callers of dma_set_max_seg_size() doesn't check the error code, but just > assumes it succeeds. > > For these reasons, let's do the initialization from the common platform bus > at the device registration point. This also follows the way the PCI devices > are being managed, see pci_device_add(). > > Suggested-by: Christoph Hellwig <hch@lst.de> > Cc: <stable@vger.kernel.org> > Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
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