Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

4 files changed, 644 insertions, 0 deletions

diff --git a/scripts/coccinelle/null/badzero.cocci b/scripts/coccinelle/null/badzero.cocci
new file mode 100644
index 000000000..35d443825
--- /dev/null
+++ b/scripts/coccinelle/null/badzero.cocci
@@ -0,0 +1,239 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/// Compare pointer-typed values to NULL rather than 0
+///
+//# This makes an effort to choose between !x and x == NULL.  !x is used
+//# if it has previously been used with the function used to initialize x.
+//# This relies on type information.  More type information can be obtained
+//# using the option -all_includes and the option -I to specify an
+//# include path.
+//
+// Confidence: High
+// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6.
+// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6.
+// URL: https://coccinelle.gitlabpages.inria.fr/website
+// Requires: 1.0.0
+// Options:
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@initialize:ocaml@
+@@
+let negtable = Hashtbl.create 101
+
+@depends on patch@
+expression *E;
+identifier f;
+@@
+
+(
+  (E = f(...)) ==
+- 0
++ NULL
+|
+  (E = f(...)) !=
+- 0
++ NULL
+|
+- 0
++ NULL
+  == (E = f(...))
+|
+- 0
++ NULL
+  != (E = f(...))
+)
+
+
+@t1 depends on !patch@
+expression *E;
+identifier f;
+position p;
+@@
+
+(
+  (E = f(...)) ==
+* 0@p
+|
+  (E = f(...)) !=
+* 0@p
+|
+* 0@p
+  == (E = f(...))
+|
+* 0@p
+  != (E = f(...))
+)
+
+@script:python depends on org@
+p << t1.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING comparing pointer to 0")
+
+@script:python depends on report@
+p << t1.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING comparing pointer to 0")
+
+// Tests of returned values
+
+@s@
+identifier f;
+expression E,E1;
+@@
+
+ E = f(...)
+ ... when != E = E1
+ !E
+
+@script:ocaml depends on s@
+f << s.f;
+@@
+
+try let _ = Hashtbl.find negtable f in ()
+with Not_found -> Hashtbl.add negtable f ()
+
+@ r disable is_zero,isnt_zero exists @
+expression *E;
+identifier f;
+@@
+
+E = f(...)
+...
+(E == 0
+|E != 0
+|0 == E
+|0 != E
+)
+
+@script:ocaml@
+f << r.f;
+@@
+
+try let _ = Hashtbl.find negtable f in ()
+with Not_found -> include_match false
+
+// This rule may lead to inconsistent path problems, if E is defined in two
+// places
+@ depends on patch disable is_zero,isnt_zero @
+expression *E;
+expression E1;
+identifier r.f;
+@@
+
+E = f(...)
+<...
+(
+- E == 0
++ !E
+|
+- E != 0
++ E
+|
+- 0 == E
++ !E
+|
+- 0 != E
++ E
+)
+...>
+?E = E1
+
+@t2 depends on !patch disable is_zero,isnt_zero @
+expression *E;
+expression E1;
+identifier r.f;
+position p1;
+position p2;
+@@
+
+E = f(...)
+<...
+(
+* E == 0@p1
+|
+* E != 0@p2
+|
+* 0@p1 == E
+|
+* 0@p1 != E
+)
+...>
+?E = E1
+
+@script:python depends on org@
+p << t2.p1;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING comparing pointer to 0, suggest !E")
+
+@script:python depends on org@
+p << t2.p2;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING comparing pointer to 0")
+
+@script:python depends on report@
+p << t2.p1;
+@@
+
+coccilib.report.print_report(p[0], "WARNING comparing pointer to 0, suggest !E")
+
+@script:python depends on report@
+p << t2.p2;
+@@
+
+coccilib.report.print_report(p[0], "WARNING comparing pointer to 0")
+
+@ depends on patch disable is_zero,isnt_zero @
+expression *E;
+@@
+
+(
+  E ==
+- 0
++ NULL
+|
+  E !=
+- 0
++ NULL
+|
+- 0
++ NULL
+  == E
+|
+- 0
++ NULL
+  != E
+)
+
+@ t3 depends on !patch disable is_zero,isnt_zero @
+expression *E;
+position p;
+@@
+
+(
+* E == 0@p
+|
+* E != 0@p
+|
+* 0@p == E
+|
+* 0@p != E
+)
+
+@script:python depends on org@
+p << t3.p;
+@@
+
+coccilib.org.print_todo(p[0], "WARNING comparing pointer to 0")
+
+@script:python depends on report@
+p << t3.p;
+@@
+
+coccilib.report.print_report(p[0], "WARNING comparing pointer to 0")
diff --git a/scripts/coccinelle/null/deref_null.cocci b/scripts/coccinelle/null/deref_null.cocci
new file mode 100644
index 000000000..fdf098d4f
--- /dev/null
+++ b/scripts/coccinelle/null/deref_null.cocci
@@ -0,0 +1,283 @@
+// SPDX-License-Identifier: GPL-2.0-only
+///
+/// A variable is dereferenced under a NULL test.
+/// Even though it is known to be NULL.
+///
+// Confidence: Moderate
+// Copyright: (C) 2010 Nicolas Palix, DIKU.
+// Copyright: (C) 2010 Julia Lawall, DIKU.
+// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.
+// URL: https://coccinelle.gitlabpages.inria.fr/website
+// Comments: -I ... -all_includes can give more complete results
+// Options:
+
+virtual context
+virtual org
+virtual report
+
+// The following two rules are separate, because both can match a single
+// expression in different ways
+@pr1 expression@
+expression E;
+identifier f;
+position p1;
+@@
+
+ (E != NULL && ...) ? <+...E->f@p1...+> : ...
+
+@pr2 expression@
+expression E;
+identifier f;
+position p2;
+@@
+
+(
+  (E != NULL) && ... && <+...E->f@p2...+>
+|
+  (E == NULL) || ... || <+...E->f@p2...+>
+|
+ sizeof(<+...E->f@p2...+>)
+)
+
+@ifm@
+expression *E;
+statement S1,S2;
+position p1;
+@@
+
+if@p1 ((E == NULL && ...) || ...) S1 else S2
+
+// For org and report modes
+
+@r depends on !context && (org || report) exists@
+expression subE <= ifm.E;
+expression *ifm.E;
+expression E1,E2;
+identifier f;
+statement S1,S2,S3,S4;
+iterator iter;
+position p!={pr1.p1,pr2.p2};
+position ifm.p1;
+@@
+
+if@p1 ((E == NULL && ...) || ...)
+{
+  ... when != if (...) S1 else S2
+(
+ iter(subE,...) S4 // no use
+|
+ list_remove_head(E2,subE,...)
+|
+ subE = E1
+|
+ for(subE = E1;...;...) S4
+|
+ subE++
+|
+ ++subE
+|
+ --subE
+|
+ subE--
+|
+ &subE
+|
+ E->f@p // bad use
+)
+  ... when any
+  return ...;
+}
+else S3
+
+@script:python depends on !context && !org && report@
+p << r.p;
+p1 << ifm.p1;
+x << ifm.E;
+@@
+
+msg="ERROR: %s is NULL but dereferenced." % (x)
+coccilib.report.print_report(p[0], msg)
+cocci.include_match(False)
+
+@script:python depends on !context && org && !report@
+p << r.p;
+p1 << ifm.p1;
+x << ifm.E;
+@@
+
+msg="ERROR: %s is NULL but dereferenced." % (x)
+msg_safe=msg.replace("[","@(").replace("]",")")
+cocci.print_main(msg_safe,p)
+cocci.include_match(False)
+
+@s depends on !context && (org || report) exists@
+expression subE <= ifm.E;
+expression *ifm.E;
+expression E1,E2;
+identifier f;
+statement S1,S2,S3,S4;
+iterator iter;
+position p!={pr1.p1,pr2.p2};
+position ifm.p1;
+@@
+
+if@p1 ((E == NULL && ...) || ...)
+{
+  ... when != if (...) S1 else S2
+(
+ iter(subE,...) S4 // no use
+|
+ list_remove_head(E2,subE,...)
+|
+ subE = E1
+|
+ for(subE = E1;...;...) S4
+|
+ subE++
+|
+ ++subE
+|
+ --subE
+|
+ subE--
+|
+ &subE
+|
+ E->f@p // bad use
+)
+  ... when any
+}
+else S3
+
+@script:python depends on !context && !org && report@
+p << s.p;
+p1 << ifm.p1;
+x << ifm.E;
+@@
+
+msg="ERROR: %s is NULL but dereferenced." % (x)
+coccilib.report.print_report(p[0], msg)
+
+@script:python depends on !context && org && !report@
+p << s.p;
+p1 << ifm.p1;
+x << ifm.E;
+@@
+
+msg="ERROR: %s is NULL but dereferenced." % (x)
+msg_safe=msg.replace("[","@(").replace("]",")")
+cocci.print_main(msg_safe,p)
+
+// For context mode
+
+@depends on context && !org && !report exists@
+expression subE <= ifm.E;
+expression *ifm.E;
+expression E1,E2;
+identifier f;
+statement S1,S2,S3,S4;
+iterator iter;
+position p!={pr1.p1,pr2.p2};
+position ifm.p1;
+@@
+
+if@p1 ((E == NULL && ...) || ...)
+{
+  ... when != if (...) S1 else S2
+(
+ iter(subE,...) S4 // no use
+|
+ list_remove_head(E2,subE,...)
+|
+ subE = E1
+|
+ for(subE = E1;...;...) S4
+|
+ subE++
+|
+ ++subE
+|
+ --subE
+|
+ subE--
+|
+ &subE
+|
+* E->f@p // bad use
+)
+  ... when any
+  return ...;
+}
+else S3
+
+// The following three rules are duplicates of ifm, pr1 and pr2 respectively.
+// It is need because the previous rule as already made a "change".
+
+@pr11 depends on context && !org && !report expression@
+expression E;
+identifier f;
+position p1;
+@@
+
+ (E != NULL && ...) ? <+...E->f@p1...+> : ...
+
+@pr12 depends on context && !org && !report expression@
+expression E;
+identifier f;
+position p2;
+@@
+
+(
+  (E != NULL) && ... && <+...E->f@p2...+>
+|
+  (E == NULL) || ... || <+...E->f@p2...+>
+|
+ sizeof(<+...E->f@p2...+>)
+)
+
+@ifm1 depends on context && !org && !report@
+expression *E;
+statement S1,S2;
+position p1;
+@@
+
+if@p1 ((E == NULL && ...) || ...) S1 else S2
+
+@depends on context && !org && !report exists@
+expression subE <= ifm1.E;
+expression *ifm1.E;
+expression E1,E2;
+identifier f;
+statement S1,S2,S3,S4;
+iterator iter;
+position p!={pr11.p1,pr12.p2};
+position ifm1.p1;
+@@
+
+if@p1 ((E == NULL && ...) || ...)
+{
+  ... when != if (...) S1 else S2
+(
+ iter(subE,...) S4 // no use
+|
+ list_remove_head(E2,subE,...)
+|
+ subE = E1
+|
+ for(subE = E1;...;...) S4
+|
+ subE++
+|
+ ++subE
+|
+ --subE
+|
+ subE--
+|
+ &subE
+|
+* E->f@p // bad use
+)
+  ... when any
+}
+else S3
diff --git a/scripts/coccinelle/null/eno.cocci b/scripts/coccinelle/null/eno.cocci
new file mode 100644
index 000000000..7107d6c8d
--- /dev/null
+++ b/scripts/coccinelle/null/eno.cocci
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/// The various basic memory allocation functions don't return ERR_PTR
+///
+// Confidence: High
+// Copyright: (C) 2010-2012 Nicolas Palix.
+// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6.
+// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6.
+// URL: https://coccinelle.gitlabpages.inria.fr/website
+// Comments:
+// Options: --no-includes --include-headers
+
+virtual patch
+virtual context
+virtual org
+virtual report
+
+@depends on patch@
+expression x,E;
+@@
+
+x = \(kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\|kmalloc_node\|kzalloc_node\)(...)
+... when != x = E
+- IS_ERR(x)
++ !x
+
+@r depends on !patch exists@
+expression x,E;
+position p1,p2;
+@@
+
+*x = \(kmalloc@p1\|kzalloc@p1\|kcalloc@p1\|kmem_cache_alloc@p1\|kmem_cache_zalloc@p1\|kmem_cache_alloc_node@p1\|kmalloc_node@p1\|kzalloc_node@p1\)(...)
+... when != x = E
+* IS_ERR@p2(x)
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+cocci.print_main("alloc call",p1)
+cocci.print_secs("IS_ERR that should be NULL tests",p2)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+msg = "ERROR: allocation function on line %s returns NULL not ERR_PTR on failure" % (p1[0].line)
+coccilib.report.print_report(p2[0], msg)
diff --git a/scripts/coccinelle/null/kmerr.cocci b/scripts/coccinelle/null/kmerr.cocci
new file mode 100644
index 000000000..68db20de6
--- /dev/null
+++ b/scripts/coccinelle/null/kmerr.cocci
@@ -0,0 +1,73 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/// This semantic patch looks for kmalloc etc that are not followed by a
+/// NULL check.  It only gives a report in the case where there is some
+/// error handling code later in the function, which may be helpful
+/// in determining what the error handling code for the call to kmalloc etc
+/// should be.
+///
+// Confidence: High
+// Copyright: (C) 2010 Nicolas Palix, DIKU.
+// Copyright: (C) 2010 Julia Lawall, DIKU.
+// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6.
+// URL: https://coccinelle.gitlabpages.inria.fr/website
+// Comments:
+// Options: --no-includes --include-headers
+
+virtual context
+virtual org
+virtual report
+
+@withtest@
+expression x;
+position p;
+identifier f,fld;
+@@
+
+x@p = f(...);
+... when != x->fld
+\(x == NULL \| x != NULL\)
+
+@fixed depends on context && !org && !report@
+expression x,x1;
+position p1 != withtest.p;
+statement S;
+position any withtest.p;
+identifier f;
+@@
+
+*x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
+...
+*x1@p = f(...);
+if (!x1) S
+
+// ------------------------------------------------------------------------
+
+@rfixed depends on (org || report) && !context exists@
+expression x,x1;
+position p1 != withtest.p;
+position p2;
+statement S;
+position any withtest.p;
+identifier f;
+@@
+
+x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
+...
+x1@p = f@p2(...);
+if (!x1) S
+
+@script:python depends on org@
+p1 << rfixed.p1;
+p2 << rfixed.p2;
+@@
+
+cocci.print_main("alloc call",p1)
+cocci.print_secs("possible model",p2)
+
+@script:python depends on report@
+p1 << rfixed.p1;
+p2 << rfixed.p2;
+@@
+
+msg = "alloc with no test, possible model on line %s" % (p2[0].line)
+coccilib.report.print_report(p1[0],msg)