From 87c0b9c79ec136ea76a14a88d675a746bc6a87f9 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Mon, 28 Oct 2019 09:06:45 +0200 Subject: intel_th: gth: Fix the window switching sequence Commit 8116db57cf16 ("intel_th: Add switch triggering support") added a trigger assertion of the CTS, but forgot to de-assert it at the end of the sequence. This results in window switches randomly not happening. Fix that by de-asserting the trigger at the end of the window switch sequence. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Fixes: 8116db57cf16 ("intel_th: Add switch triggering support") Cc: stable Link: https://lore.kernel.org/r/20191028070651.9770-2-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/gth.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/gth.c b/drivers/hwtracing/intel_th/gth.c index fa9d34af87ac..f72803a02391 100644 --- a/drivers/hwtracing/intel_th/gth.c +++ b/drivers/hwtracing/intel_th/gth.c @@ -626,6 +626,9 @@ static void intel_th_gth_switch(struct intel_th_device *thdev, if (!count) dev_dbg(&thdev->dev, "timeout waiting for CTS Trigger\n"); + /* De-assert the trigger */ + iowrite32(0, gth->base + REG_CTS_CTL); + intel_th_gth_stop(gth, output, false); intel_th_gth_start(gth, output); } -- cgit From e5a340f770278f4de42e8bac19f2ebeb77ddfae4 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Mon, 28 Oct 2019 09:06:46 +0200 Subject: intel_th: msu: Fix an uninitialized mutex Commit 615c164da0eb ("intel_th: msu: Introduce buffer interface") added a mutex that it forgot to initialize, resulting in a lockdep splat. Fix that by initializing the mutex statically. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Link: https://lore.kernel.org/r/20191028070651.9770-3-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/msu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index fc9f15f36ad4..51021020fa3f 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -164,7 +164,7 @@ struct msc { }; static LIST_HEAD(msu_buffer_list); -static struct mutex msu_buffer_mutex; +static DEFINE_MUTEX(msu_buffer_mutex); /** * struct msu_buffer_entry - internal MSU buffer bookkeeping -- cgit From 063f097fd65a90fca2cd49411a2d6e35b8ca25db Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 28 Oct 2019 09:06:47 +0200 Subject: intel_th: msu: Fix missing allocation failure check on a kstrndup Commit 615c164da0eb ("intel_th: msu: Introduce buffer interface") forgot to add a NULL pointer check for the value returned from kstrdup(), which will be troublesome if the allocation fails. Fix that by adding the check. Addresses-Coverity: ("Dereference null return") Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Colin Ian King [alexander.shishkin: amended the commit message] Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/lkml/20190726120421.9650-1-colin.king@canonical.com/ Link: https://lore.kernel.org/r/20191028070651.9770-4-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/msu.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index 51021020fa3f..201a166fdff5 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -1848,6 +1848,9 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf, len = cp - buf; mode = kstrndup(buf, len, GFP_KERNEL); + if (!mode) + return -ENOMEM; + i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode); if (i >= 0) goto found; -- cgit From 8e3ef7b444aec3d1059085ce41edaa76ee7340e7 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Mon, 28 Oct 2019 09:06:48 +0200 Subject: intel_th: msu: Fix overflow in shift of an unsigned int The shift of the unsigned int win->nr_blocks by PAGE_SHIFT may potentially overflow. Note that the intended return of this shift is expected to be a size_t however the shift is being performed as an unsigned int. Fix this by casting win->nr_blocks to a size_t before performing the shift. Addresses-Coverity: ("Unintentional integer overflow") Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Colin Ian King Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/lkml/20190726113151.8967-1-colin.king@canonical.com/ Link: https://lore.kernel.org/r/20191028070651.9770-5-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/msu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index 201a166fdff5..9dc9ae87b5e5 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -327,7 +327,7 @@ static size_t msc_win_total_sz(struct msc_window *win) struct msc_block_desc *bdesc = sg_virt(sg); if (msc_block_wrapped(bdesc)) - return win->nr_blocks << PAGE_SHIFT; + return (size_t)win->nr_blocks << PAGE_SHIFT; size += msc_total_sz(bdesc); if (msc_block_last_written(bdesc)) -- cgit From 1fa1b6ca0fda97cbfccdc6b80b1a6b2920751665 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 28 Oct 2019 09:06:49 +0200 Subject: intel_th: msu: Fix possible memory leak in mode_store() 'mode' is malloced in mode_store() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: 615c164da0eb ("intel_th: msu: Introduce buffer interface") Signed-off-by: Wei Yongjun Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/lkml/20190801013825.182543-1-weiyongjun1@huawei.com/ Link: https://lore.kernel.org/r/20191028070651.9770-6-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/msu.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c index 9dc9ae87b5e5..6d240dfae9d9 100644 --- a/drivers/hwtracing/intel_th/msu.c +++ b/drivers/hwtracing/intel_th/msu.c @@ -1852,8 +1852,10 @@ mode_store(struct device *dev, struct device_attribute *attr, const char *buf, return -ENOMEM; i = match_string(msc_mode, ARRAY_SIZE(msc_mode), mode); - if (i >= 0) + if (i >= 0) { + kfree(mode); goto found; + } /* Buffer sinks only work with a usable IRQ */ if (!msc->do_irq) { -- cgit From 3adbb5718dd5264666ddbc2b9b43799d292e9cb6 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Mon, 28 Oct 2019 09:06:50 +0200 Subject: intel_th: pci: Add Comet Lake PCH support This adds support for Intel TH on Comet Lake PCH. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191028070651.9770-7-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/pci.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/pci.c b/drivers/hwtracing/intel_th/pci.c index 91dfeba62485..4088e1865b07 100644 --- a/drivers/hwtracing/intel_th/pci.c +++ b/drivers/hwtracing/intel_th/pci.c @@ -199,6 +199,11 @@ static const struct pci_device_id intel_th_pci_id_table[] = { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x02a6), .driver_data = (kernel_ulong_t)&intel_th_2x, }, + { + /* Comet Lake PCH */ + PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x06a6), + .driver_data = (kernel_ulong_t)&intel_th_2x, + }, { /* Ice Lake NNPI */ PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x45c5), -- cgit From 9d55499d8da49e9261e95a490f3fda41d955f505 Mon Sep 17 00:00:00 2001 From: Alexander Shishkin Date: Mon, 28 Oct 2019 09:06:51 +0200 Subject: intel_th: pci: Add Jasper Lake PCH support This adds support for Intel TH on Jasper Lake PCH. Signed-off-by: Alexander Shishkin Reviewed-by: Andy Shevchenko Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20191028070651.9770-8-alexander.shishkin@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/hwtracing/intel_th/pci.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/hwtracing') diff --git a/drivers/hwtracing/intel_th/pci.c b/drivers/hwtracing/intel_th/pci.c index 4088e1865b07..03ca5b1bef9f 100644 --- a/drivers/hwtracing/intel_th/pci.c +++ b/drivers/hwtracing/intel_th/pci.c @@ -214,6 +214,11 @@ static const struct pci_device_id intel_th_pci_id_table[] = { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0xa0a6), .driver_data = (kernel_ulong_t)&intel_th_2x, }, + { + /* Jasper Lake PCH */ + PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x4da6), + .driver_data = (kernel_ulong_t)&intel_th_2x, + }, { 0 }, }; -- cgit