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95 lines
4.5 KiB
Diff
95 lines
4.5 KiB
Diff
commit b89a69dec27cf638df0e17db80ed937c3e1abf77
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Author: Dmitry V. Levin <ldv@altlinux.org>
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Date: Sat Aug 18 07:22:47 2018 +0000
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xlat: workaround V4L2_CID_USER_IMX_BASE Linux kernel ABI breakage
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Linux kernel commit v4.18-rc2-106-g421860b9d47053badce4b247576fa48df9ab4c48
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has changed the value of V4L2_CID_USER_IMX_BASE constant introduced
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by commit v4.13-rc1~141^2~121 because the old value was already used
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by V4L2_CID_USER_MAX217X_BASE.
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This is of course an ABI breakage that affects Linux kernels starting
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with 4.13 and up to 4.18, as well as their LTS derivatives.
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Since the imx driver didn't provide any public control ID definitions,
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it looks like the best way to handle this situation is to pretend that
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the old value of V4L2_CID_USER_IMX_BASE didn't exist.
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* xlat/v4l2_control_id_bases.in (V4L2_CID_USER_IMX_BASE): Redefine.
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Co-Authored-by: Eugene Syromyatnikov <evgsyr@gmail.com>
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diff --git a/xlat/v4l2_control_id_bases.in b/xlat/v4l2_control_id_bases.in
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index a0359be9..f3fd9255 100644
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--- a/xlat/v4l2_control_id_bases.in
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+++ b/xlat/v4l2_control_id_bases.in
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@@ -2,7 +2,22 @@ V4L2_CID_BASE (V4L2_CTRL_CLASS_USER | 0x900)
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V4L2_CID_USER_MEYE_BASE (V4L2_CID_BASE + 0x1000)
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V4L2_CID_USER_BTTV_BASE (V4L2_CID_BASE + 0x1010)
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V4L2_CID_USER_TI_VPE_BASE (V4L2_CID_BASE + 0x1050)
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-V4L2_CID_USER_IMX_BASE (V4L2_CID_BASE + 0x1090)
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+#ifndef STRACE_WORKAROUND_FOR_V4L2_CID_USER_IMX_BASE
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+# define STRACE_WORKAROUND_FOR_V4L2_CID_USER_IMX_BASE
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+/*
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+ * Linux kernel commit v4.18-rc2-106-g421860b9d47053badce4b247576fa48df9ab4c48
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+ * has changed the value of V4L2_CID_USER_IMX_BASE constant introduced
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+ * by commit v4.13-rc1~141^2~121 because the old value was already used
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+ * by V4L2_CID_USER_MAX217X_BASE.
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+ * This is of course an ABI breakage that affects Linux kernels starting
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+ * with 4.13 and up to 4.18, as well as their LTS derivatives.
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+ * Since the imx driver didn't provide any public control ID definitions,
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+ * it looks like the best way to handle this situation is to pretend that
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+ * the old value of V4L2_CID_USER_IMX_BASE didn't exist.
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+ */
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+# undef V4L2_CID_USER_IMX_BASE
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+#endif
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+V4L2_CID_USER_IMX_BASE (V4L2_CID_BASE + 0x10b0)
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V4L2_CID_MPEG_BASE (V4L2_CTRL_CLASS_MPEG | 0x900)
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V4L2_CID_MPEG_CX2341X_BASE (V4L2_CTRL_CLASS_MPEG | 0x1000)
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V4L2_CID_MPEG_MFC51_BASE (V4L2_CTRL_CLASS_MPEG | 0x1100)
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diff -urpN a/xlat/v4l2_control_id_bases.h b/xlat/v4l2_control_id_bases.h
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--- a/xlat/v4l2_control_id_bases.h
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+++ b/xlat/v4l2_control_id_bases.h
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@@ -31,12 +31,16 @@ DIAG_POP_IGNORE_TAUTOLOGICAL_COMPARE
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#else
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# define V4L2_CID_USER_TI_VPE_BASE (V4L2_CID_BASE + 0x1050)
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#endif
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+#ifndef STRACE_WORKAROUND_FOR_V4L2_CID_USER_IMX_BASE
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+# define STRACE_WORKAROUND_FOR_V4L2_CID_USER_IMX_BASE
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+# undef V4L2_CID_USER_IMX_BASE
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+#endif
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#if defined(V4L2_CID_USER_IMX_BASE) || (defined(HAVE_DECL_V4L2_CID_USER_IMX_BASE) && HAVE_DECL_V4L2_CID_USER_IMX_BASE)
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DIAG_PUSH_IGNORE_TAUTOLOGICAL_COMPARE
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-static_assert((V4L2_CID_USER_IMX_BASE) == ((V4L2_CID_BASE + 0x1090)), "V4L2_CID_USER_IMX_BASE != (V4L2_CID_BASE + 0x1090)");
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+static_assert((V4L2_CID_USER_IMX_BASE) == ((V4L2_CID_BASE + 0x10b0)), "V4L2_CID_USER_IMX_BASE != (V4L2_CID_BASE + 0x10b0)");
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DIAG_POP_IGNORE_TAUTOLOGICAL_COMPARE
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#else
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-# define V4L2_CID_USER_IMX_BASE (V4L2_CID_BASE + 0x1090)
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+# define V4L2_CID_USER_IMX_BASE (V4L2_CID_BASE + 0x10b0)
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#endif
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#if defined(V4L2_CID_MPEG_BASE) || (defined(HAVE_DECL_V4L2_CID_MPEG_BASE) && HAVE_DECL_V4L2_CID_MPEG_BASE)
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DIAG_PUSH_IGNORE_TAUTOLOGICAL_COMPARE
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@@ -146,6 +150,21 @@ const struct xlat v4l2_control_id_bases[
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XLAT(V4L2_CID_USER_MEYE_BASE),
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XLAT(V4L2_CID_USER_BTTV_BASE),
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XLAT(V4L2_CID_USER_TI_VPE_BASE),
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+#ifndef STRACE_WORKAROUND_FOR_V4L2_CID_USER_IMX_BASE
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+# define STRACE_WORKAROUND_FOR_V4L2_CID_USER_IMX_BASE
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+/*
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+* Linux kernel commit v4.18-rc2-106-g421860b9d47053badce4b247576fa48df9ab4c48
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+* has changed the value of V4L2_CID_USER_IMX_BASE constant introduced
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+* by commit v4.13-rc1~141^2~121 because the old value was already used
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+* by V4L2_CID_USER_MAX217X_BASE.
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+* This is of course an ABI breakage that affects Linux kernels starting
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+* with 4.13 and up to 4.18, as well as their LTS derivatives.
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+* Since the imx driver didn't provide any public control ID definitions,
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+* it looks like the best way to handle this situation is to pretend that
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+* the old value of V4L2_CID_USER_IMX_BASE didn't exist.
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+*/
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+# undef V4L2_CID_USER_IMX_BASE
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+#endif
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XLAT(V4L2_CID_USER_IMX_BASE),
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XLAT(V4L2_CID_MPEG_BASE),
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XLAT(V4L2_CID_MPEG_CX2341X_BASE),
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