Merge series "spi: spi-geni-qcom: Use gpio descriptors for CS" from Stephen Boyd <swboyd@chromium.org>:

Collected patches from the two series below and associated tags so they
can be merged in one pile through the spi tree. Merry December!

SPI: https://lore.kernel.org/r/20201202214935.1114381-1-swboyd@chromium.org
cros-ec: https://lore.kernel.org/r/20201203011649.1405292-1-swboyd@chromium.org

Cc: Akash Asthana <akashast@codeaurora.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Gwendal Grignou <gwendal@chromium.org>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Alexandru M Stan <amstan@chromium.org>

Stephen Boyd (3):
  platform/chrome: cros_ec_spi: Don't overwrite spi::mode
  platform/chrome: cros_ec_spi: Drop bits_per_word assignment
  spi: spi-geni-qcom: Use the new method of gpio CS control

 drivers/platform/chrome/cros_ec_spi.c | 2 --
 drivers/spi/spi-geni-qcom.c           | 1 +
 2 files changed, 1 insertion(+), 2 deletions(-)

base-commit: b65054597872ce3aefbc6a666385eabdf9e288da
--
https://chromeos.dev

1 files changed, 21 insertions, 4 deletions

diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 8a12a25fa40d..41fdbb7953c6 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -1249,7 +1249,13 @@ __acquires(hlist_lock)
 
 	*head = &kretprobe_inst_table[hash];
 	hlist_lock = kretprobe_table_lock_ptr(hash);
-	raw_spin_lock_irqsave(hlist_lock, *flags);
+	/*
+	 * Nested is a workaround that will soon not be needed.
+	 * There's other protections that make sure the same lock
+	 * is not taken on the same CPU that lockdep is unaware of.
+	 * Differentiate when it is taken in NMI context.
+	 */
+	raw_spin_lock_irqsave_nested(hlist_lock, *flags, !!in_nmi());
 }
 NOKPROBE_SYMBOL(kretprobe_hash_lock);
 
@@ -1258,7 +1264,13 @@ static void kretprobe_table_lock(unsigned long hash,
 __acquires(hlist_lock)
 {
 	raw_spinlock_t *hlist_lock = kretprobe_table_lock_ptr(hash);
-	raw_spin_lock_irqsave(hlist_lock, *flags);
+	/*
+	 * Nested is a workaround that will soon not be needed.
+	 * There's other protections that make sure the same lock
+	 * is not taken on the same CPU that lockdep is unaware of.
+	 * Differentiate when it is taken in NMI context.
+	 */
+	raw_spin_lock_irqsave_nested(hlist_lock, *flags, !!in_nmi());
 }
 NOKPROBE_SYMBOL(kretprobe_table_lock);
 
@@ -2028,7 +2040,12 @@ static int pre_handler_kretprobe(struct kprobe *p, struct pt_regs *regs)
 
 	/* TODO: consider to only swap the RA after the last pre_handler fired */
 	hash = hash_ptr(current, KPROBE_HASH_BITS);
-	raw_spin_lock_irqsave(&rp->lock, flags);
+	/*
+	 * Nested is a workaround that will soon not be needed.
+	 * There's other protections that make sure the same lock
+	 * is not taken on the same CPU that lockdep is unaware of.
+	 */
+	raw_spin_lock_irqsave_nested(&rp->lock, flags, 1);
 	if (!hlist_empty(&rp->free_instances)) {
 		ri = hlist_entry(rp->free_instances.first,
 				struct kretprobe_instance, hlist);
@@ -2039,7 +2056,7 @@ static int pre_handler_kretprobe(struct kprobe *p, struct pt_regs *regs)
 		ri->task = current;
 
 		if (rp->entry_handler && rp->entry_handler(ri, regs)) {
-			raw_spin_lock_irqsave(&rp->lock, flags);
+			raw_spin_lock_irqsave_nested(&rp->lock, flags, 1);
 			hlist_add_head(&ri->hlist, &rp->free_instances);
 			raw_spin_unlock_irqrestore(&rp->lock, flags);
 			return 0;