From 6d058c5643e16779ae4c001d2e893c140940e48f Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Fri, 3 Jul 2015 04:37:07 -0300 Subject: [media] vb2: Only requeue buffers immediately once streaming is started Buffers can be returned back to videobuf2 in driver's streamon handler. In this case vb2_buffer_done() with buffer state VB2_BUF_STATE_QUEUED will cause the driver's buf_queue vb2 operation to be called, queueing the same buffer again only to be returned to videobuf2 using vb2_buffer_done() and so on. Add a new buffer state VB2_BUF_STATE_REQUEUEING which, when used as the state argument to vb2_buffer_done(), will result in buffers queued to the driver. Using VB2_BUF_STATE_QUEUED will leave the buffer to videobuf2, as it was before "[media] vb2: allow requeuing buffers while streaming". Fixes: ce0eff016f72 ("[media] vb2: allow requeuing buffers while streaming") [mchehab@osg.samsung.com: fix warning: enumeration value 'VB2_BUF_STATE_REQUEUEING' not handled in switch] Signed-off-by: Sakari Ailus Acked-by: Hans Verkuil Cc: stable@vger.kernel.org # for v4.1 Signed-off-by: Mauro Carvalho Chehab --- include/media/videobuf2-core.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h index 22a44c2f5963..c192e1b46cdc 100644 --- a/include/media/videobuf2-core.h +++ b/include/media/videobuf2-core.h @@ -139,6 +139,7 @@ enum vb2_io_modes { * @VB2_BUF_STATE_PREPARING: buffer is being prepared in videobuf * @VB2_BUF_STATE_PREPARED: buffer prepared in videobuf and by the driver * @VB2_BUF_STATE_QUEUED: buffer queued in videobuf, but not in driver + * @VB2_BUF_STATE_REQUEUEING: re-queue a buffer to the driver * @VB2_BUF_STATE_ACTIVE: buffer queued in driver and possibly used * in a hardware operation * @VB2_BUF_STATE_DONE: buffer returned from driver to videobuf, but @@ -152,6 +153,7 @@ enum vb2_buffer_state { VB2_BUF_STATE_PREPARING, VB2_BUF_STATE_PREPARED, VB2_BUF_STATE_QUEUED, + VB2_BUF_STATE_REQUEUEING, VB2_BUF_STATE_ACTIVE, VB2_BUF_STATE_DONE, VB2_BUF_STATE_ERROR, -- cgit v1.2.3 From 78b50f39142612d01073595d33e7cc48f03a5a2f Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 15 Aug 2015 08:24:20 -0700 Subject: ASoC: topology: Add Kconfig option for topology Allow the topology code to be compiled out so that users who don't need topology don't need to havve the code compiled in, saving them some memory. Some more configuration could be added to remove some of the hooks into the core data structures but that is probably best done with some refactoring to use functions to do the updates of the data structures rather than ifdefing in the code as we'd need to do at the minute. Suggested-by: Takashi Iwai Signed-off-by: Mark Brown --- include/sound/soc-topology.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include') diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h index 865a141b118b..427bc41df3ae 100644 --- a/include/sound/soc-topology.h +++ b/include/sound/soc-topology.h @@ -141,6 +141,8 @@ struct snd_soc_tplg_ops { int io_ops_count; }; +#ifdef CONFIG_SND_SOC_TOPOLOGY + /* gets a pointer to data from the firmware block header */ static inline const void *snd_soc_tplg_get_data(struct snd_soc_tplg_hdr *hdr) { @@ -165,4 +167,14 @@ int snd_soc_tplg_widget_bind_event(struct snd_soc_dapm_widget *w, const struct snd_soc_tplg_widget_events *events, int num_events, u16 event_type); +#else + +static inline int snd_soc_tplg_component_remove(struct snd_soc_component *comp, + u32 index) +{ + return 0; +} + +#endif + #endif -- cgit v1.2.3 From 8c90503bf246bebb48caa5590d41df755ba08550 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 17 Aug 2015 22:59:25 -0700 Subject: ASoC: topology: Disable use from userspace Since the topology API is still in sufficient flux for changes to be identified disable the use of the userspace ABI by adding #error statements to the code, ensuring that nobody relies on the headers as currently defined. It is expected that this change will be reverted for v4.3. Signed-off-by: Mark Brown --- include/uapi/sound/asoc.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h index 12215205ab8d..677c3c939f1d 100644 --- a/include/uapi/sound/asoc.h +++ b/include/uapi/sound/asoc.h @@ -18,6 +18,12 @@ #include #include +#ifndef __KERNEL__ +#error This API is an early revision and not enabled in the current +#error kernel release, it will be enabled in a future kernel version +#error with incompatible changes to what is here. +#endif + /* * Maximum number of channels topology kcontrol can represent. */ -- cgit v1.2.3 From 23f28f2adcf608170c9062b1f490c4f0dcc995e3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?David=20H=C3=A4rdeman?= Date: Mon, 20 Jul 2015 16:16:31 -0300 Subject: Revert "[media] rc: nuvoton-cir: Add support for writing wakeup samples via sysfs filter callback" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit da7ee60b03bd66bb10974d7444aa444de6391312. The current code is not mature enough, the API should allow a single protocol to be specified. Also, the current code contains heuristics that will depend on module load order. Signed-off-by: David Härdeman Acked-by: Antti Seppälä Signed-off-by: Mauro Carvalho Chehab --- include/media/rc-core.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/media/rc-core.h b/include/media/rc-core.h index 45534da57759..df73d85b30c1 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -246,7 +246,6 @@ static inline void init_ir_raw_event(struct ir_raw_event *ev) #define US_TO_NS(usec) ((usec) * 1000) #define MS_TO_US(msec) ((msec) * 1000) #define MS_TO_NS(msec) ((msec) * 1000 * 1000) -#define NS_TO_US(nsec) DIV_ROUND_UP(nsec, 1000L) void ir_raw_event_handle(struct rc_dev *dev); int ir_raw_event_store(struct rc_dev *dev, struct ir_raw_event *ev); -- cgit v1.2.3 From 3a03b86fdc1634e81d77f84e987c5a15426eff3d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?David=20H=C3=A4rdeman?= Date: Mon, 20 Jul 2015 16:16:41 -0300 Subject: Revert "[media] rc: rc-core: Add support for encode_wakeup drivers" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 0d830b2d1295fee82546d57185da5a6604f11ae2. The current code is not mature enough, the API should allow a single protocol to be specified. Also, the current code contains heuristics that will depend on module load order. Signed-off-by: David Härdeman Acked-by: Antti Seppälä Signed-off-by: Mauro Carvalho Chehab --- include/media/rc-core.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include') diff --git a/include/media/rc-core.h b/include/media/rc-core.h index df73d85b30c1..f0d09590ce58 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -74,8 +74,6 @@ enum rc_filter_type { * @input_dev: the input child device used to communicate events to userspace * @driver_type: specifies if protocol decoding is done in hardware or software * @idle: used to keep track of RX state - * @encode_wakeup: wakeup filtering uses IR encode API, therefore the allowed - * wakeup protocols is the set of all raw encoders * @allowed_protocols: bitmask with the supported RC_BIT_* protocols * @enabled_protocols: bitmask with the enabled RC_BIT_* protocols * @allowed_wakeup_protocols: bitmask with the supported RC_BIT_* wakeup protocols @@ -136,7 +134,6 @@ struct rc_dev { struct input_dev *input_dev; enum rc_driver_type driver_type; bool idle; - bool encode_wakeup; u64 allowed_protocols; u64 enabled_protocols; u64 allowed_wakeup_protocols; -- cgit v1.2.3 From 72c5b7b24f3800bf8b1b1c78511c6da09d33c590 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?David=20H=C3=A4rdeman?= Date: Mon, 20 Jul 2015 16:17:01 -0300 Subject: Revert "[media] rc: rc-ir-raw: Add scancode encoder callback" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 9869da5bacc5c9b865a183bd36c04be76cdd325d. The current code is not mature enough, the API should allow a single protocol to be specified. Also, the current code contains heuristics that will depend on module load order. Signed-off-by: David Härdeman Acked-by: Antti Seppälä Signed-off-by: Mauro Carvalho Chehab --- include/media/rc-core.h | 3 --- 1 file changed, 3 deletions(-) (limited to 'include') diff --git a/include/media/rc-core.h b/include/media/rc-core.h index f0d09590ce58..644bdc61c387 100644 --- a/include/media/rc-core.h +++ b/include/media/rc-core.h @@ -250,9 +250,6 @@ int ir_raw_event_store_edge(struct rc_dev *dev, enum raw_event_type type); int ir_raw_event_store_with_filter(struct rc_dev *dev, struct ir_raw_event *ev); void ir_raw_event_set_idle(struct rc_dev *dev, bool idle); -int ir_raw_encode_scancode(u64 protocols, - const struct rc_scancode_filter *scancode, - struct ir_raw_event *events, unsigned int max); static inline void ir_raw_event_reset(struct rc_dev *dev) { -- cgit v1.2.3 From b7560de198222994374c1340a389f12d5efb244a Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Fri, 14 Aug 2015 15:20:26 +0300 Subject: genirq: Introduce irq_chip_set_type_parent() helper This helper is required for irq chips which do not implement a irq_set_type callback and need to call down the irq domain hierarchy for the actual trigger type change. This helper is required to fix further wreckage caused by the conversion of TI OMAP to hierarchical irq domains and therefor tagged for stable. [ tglx: Massaged changelog ] Signed-off-by: Grygorii Strashko Cc: Sudeep Holla Cc: Cc: Cc: Cc: Cc: Cc: Cc: Cc: stable@vger.kernel.org # 4.1 Link: http://lkml.kernel.org/r/1439554830-19502-3-git-send-email-grygorii.strashko@ti.com Signed-off-by: Thomas Gleixner --- include/linux/irq.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/irq.h b/include/linux/irq.h index 92188b0225bb..51744bcf74ee 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -484,6 +484,7 @@ extern int irq_chip_set_affinity_parent(struct irq_data *data, extern int irq_chip_set_wake_parent(struct irq_data *data, unsigned int on); extern int irq_chip_set_vcpu_affinity_parent(struct irq_data *data, void *vcpu_info); +extern int irq_chip_set_type_parent(struct irq_data *data, unsigned int type); #endif /* Handling of unhandled and spurious interrupts: */ -- cgit v1.2.3 From 1c73d3b10e6976919ce3caa5110e05e04326a7ec Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 28 Mar 2015 18:13:52 +0000 Subject: drm/edid: add function to help find SADs Add a function to find the start of the SADs in the ELD. This complements the helper to retrieve the SAD count. [airlied: this fixes a build problem with the alsa eld helper which required this]. Signed-off-by: Russell King Signed-off-by: Dave Airlie --- include/drm/drm_edid.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'include') diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 799050198323..53c53c459b15 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -347,6 +347,25 @@ static inline int drm_eld_mnl(const uint8_t *eld) return (eld[DRM_ELD_CEA_EDID_VER_MNL] & DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT; } +/** + * drm_eld_sad - Get ELD SAD structures. + * @eld: pointer to an eld memory structure with sad_count set + */ +static inline const uint8_t *drm_eld_sad(const uint8_t *eld) +{ + unsigned int ver, mnl; + + ver = (eld[DRM_ELD_VER] & DRM_ELD_VER_MASK) >> DRM_ELD_VER_SHIFT; + if (ver != 2 && ver != 31) + return NULL; + + mnl = drm_eld_mnl(eld); + if (mnl > 16) + return NULL; + + return eld + DRM_ELD_CEA_SAD(mnl, 0); +} + /** * drm_eld_sad_count - Get ELD SAD count. * @eld: pointer to an eld memory structure with sad_count set -- cgit v1.2.3 From 2f064f3485cd29633ad1b3cfb00cc519509a3d72 Mon Sep 17 00:00:00 2001 From: Michal Hocko Date: Fri, 21 Aug 2015 14:11:51 -0700 Subject: mm: make page pfmemalloc check more robust Commit c48a11c7ad26 ("netvm: propagate page->pfmemalloc to skb") added checks for page->pfmemalloc to __skb_fill_page_desc(): if (page->pfmemalloc && !page->mapping) skb->pfmemalloc = true; It assumes page->mapping == NULL implies that page->pfmemalloc can be trusted. However, __delete_from_page_cache() can set set page->mapping to NULL and leave page->index value alone. Due to being in union, a non-zero page->index will be interpreted as true page->pfmemalloc. So the assumption is invalid if the networking code can see such a page. And it seems it can. We have encountered this with a NFS over loopback setup when such a page is attached to a new skbuf. There is no copying going on in this case so the page confuses __skb_fill_page_desc which interprets the index as pfmemalloc flag and the network stack drops packets that have been allocated using the reserves unless they are to be queued on sockets handling the swapping which is the case here and that leads to hangs when the nfs client waits for a response from the server which has been dropped and thus never arrive. The struct page is already heavily packed so rather than finding another hole to put it in, let's do a trick instead. We can reuse the index again but define it to an impossible value (-1UL). This is the page index so it should never see the value that large. Replace all direct users of page->pfmemalloc by page_is_pfmemalloc which will hide this nastiness from unspoiled eyes. The information will get lost if somebody wants to use page->index obviously but that was the case before and the original code expected that the information should be persisted somewhere else if that is really needed (e.g. what SLAB and SLUB do). [akpm@linux-foundation.org: fix blooper in slub] Fixes: c48a11c7ad26 ("netvm: propagate page->pfmemalloc to skb") Signed-off-by: Michal Hocko Debugged-by: Vlastimil Babka Debugged-by: Jiri Bohac Cc: Eric Dumazet Cc: David Miller Acked-by: Mel Gorman Cc: [3.6+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mm.h | 28 ++++++++++++++++++++++++++++ include/linux/mm_types.h | 9 --------- include/linux/skbuff.h | 14 +++++--------- 3 files changed, 33 insertions(+), 18 deletions(-) (limited to 'include') diff --git a/include/linux/mm.h b/include/linux/mm.h index 2e872f92dbac..bf6f117fcf4d 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1002,6 +1002,34 @@ static inline int page_mapped(struct page *page) return atomic_read(&(page)->_mapcount) >= 0; } +/* + * Return true only if the page has been allocated with + * ALLOC_NO_WATERMARKS and the low watermark was not + * met implying that the system is under some pressure. + */ +static inline bool page_is_pfmemalloc(struct page *page) +{ + /* + * Page index cannot be this large so this must be + * a pfmemalloc page. + */ + return page->index == -1UL; +} + +/* + * Only to be called by the page allocator on a freshly allocated + * page. + */ +static inline void set_page_pfmemalloc(struct page *page) +{ + page->index = -1UL; +} + +static inline void clear_page_pfmemalloc(struct page *page) +{ + page->index = 0; +} + /* * Different kinds of faults, as returned by handle_mm_fault(). * Used to decide whether a process gets delivered SIGBUS or diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 0038ac7466fd..15549578d559 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -63,15 +63,6 @@ struct page { union { pgoff_t index; /* Our offset within mapping. */ void *freelist; /* sl[aou]b first free object */ - bool pfmemalloc; /* If set by the page allocator, - * ALLOC_NO_WATERMARKS was set - * and the low watermark was not - * met implying that the system - * is under some pressure. The - * caller should try ensure - * this page is only used to - * free other pages. - */ }; union { diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 22b6d9ca1654..9b88536487e6 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1602,20 +1602,16 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i, skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; /* - * Propagate page->pfmemalloc to the skb if we can. The problem is - * that not all callers have unique ownership of the page. If - * pfmemalloc is set, we check the mapping as a mapping implies - * page->index is set (index and pfmemalloc share space). - * If it's a valid mapping, we cannot use page->pfmemalloc but we - * do not lose pfmemalloc information as the pages would not be - * allocated using __GFP_MEMALLOC. + * Propagate page pfmemalloc to the skb if we can. The problem is + * that not all callers have unique ownership of the page but rely + * on page_is_pfmemalloc doing the right thing(tm). */ frag->page.p = page; frag->page_offset = off; skb_frag_size_set(frag, size); page = compound_head(page); - if (page->pfmemalloc && !page->mapping) + if (page_is_pfmemalloc(page)) skb->pfmemalloc = true; } @@ -2263,7 +2259,7 @@ static inline struct page *dev_alloc_page(void) static inline void skb_propagate_pfmemalloc(struct page *page, struct sk_buff *skb) { - if (page && page->pfmemalloc) + if (page_is_pfmemalloc(page)) skb->pfmemalloc = true; } -- cgit v1.2.3 From 22b6839b914bbe5d94de11bbb83931952090719c Mon Sep 17 00:00:00 2001 From: "Guilherme G. Piccoli" Date: Mon, 24 Aug 2015 22:42:46 +1000 Subject: PCI: Make pci_msi_setup_pci_dev() non-static for use by arch code Commit 1851617cd2da ("PCI/MSI: Disable MSI at enumeration even if kernel doesn't support MSI") changed the location of the code that initialises dev->msi_cap/msix_cap and then disables MSI/MSI-X interrupts at PCI probe time in devices that have this flag set. It moved the code from pci_msi_init_pci_dev() to a new function named pci_msi_setup_pci_dev(), called by pci_setup_device(). The pseries PCI probing code does not call pci_setup_device(), so since the aforementioned commit the function pci_msi_setup_pci_dev() is not called and MSI/MSI-X interrupts are left enabled. Additionally because dev->msi_cap/msix_cap are not initialised no driver can ever enable MSI/MSI-X. To fix this, the pseries PCI probe should manually call pci_msi_setup_pci_dev(), so this patch makes it non-static. Fixes: 1851617cd2da ("PCI/MSI: Disable MSI at enumeration even if kernel doesn't support MSI") [mpe: Update change log to mention dev->msi_cap/msix_cap] Signed-off-by: Guilherme G. Piccoli Signed-off-by: Michael Ellerman --- include/linux/pci.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/pci.h b/include/linux/pci.h index 8a0321a8fb59..860c751810fc 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1202,6 +1202,7 @@ struct msix_entry { u16 entry; /* driver uses to specify entry, OS writes */ }; +void pci_msi_setup_pci_dev(struct pci_dev *dev); #ifdef CONFIG_PCI_MSI int pci_msi_vec_count(struct pci_dev *dev); -- cgit v1.2.3