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Date: Thu, 18 Feb 2016 13:52:38 -0500 From: Rhyland Klein <rklein@...dia.com> To: Lee Jones <lee.jones@...aro.org> CC: <linux-kernel@...r.kernel.org>, Rhyland Klein <rklein@...dia.com>, Laxman Dewangan <ldewangan@...dia.com> Subject: [PATCH] mfd: Fix MACRO for commonly declared MFD cell attributes MFD_ARRAY_SIZE() would not accurately return 0 if the passed parameter was NULL. Fix this so that num_resources will accurately be 0 in the case that _res is NULL. cc: Lee Jones <lee.jones@...aro.org> cc: Laxman Dewangan <ldewangan@...dia.com> Signed-off-by: Rhyland Klein <rklein@...dia.com> --- include/linux/mfd/core.h | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/include/linux/mfd/core.h b/include/linux/mfd/core.h index 1a5a87f3cd38..62136ccff1df 100644 --- a/include/linux/mfd/core.h +++ b/include/linux/mfd/core.h @@ -18,11 +18,11 @@ #define MFD_ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) -#define MFD_CELL_ALL(_name, _res, _pdata, _id, _compat, _match) \ +#define MFD_CELL_ALL(_name, _nres, _res, _pdata, _id, _compat, _match) \ { \ .name = (_name), \ .resources = (_res), \ - .num_resources = MFD_ARRAY_SIZE((_res)), \ + .num_resources = (_nres), \ .platform_data = (_pdata), \ .pdata_size = MFD_ARRAY_SIZE((_pdata)), \ .of_compatible = (_compat), \ @@ -31,16 +31,19 @@ } #define OF_MFD_CELL(_name, _res, _pdata, _id, _compat) \ - MFD_CELL_ALL(_name, _res, _pdata, _id, _compat, NULL) \ + MFD_CELL_ALL(_name, MFD_ARRAY_SIZE((_res)), _res, \ + _pdata, _id, _compat, NULL) \ #define ACPI_MFD_CELL(_name, _res, _pdata, _id, _match) \ - MFD_CELL_ALL(_name, _res, _pdata, _id, NULL, _match) \ + MFD_CELL_ALL(_name, MFD_ARRAY_SIZE((_res)), _res, \ + _pdata, _id, NULL, _match) \ #define MFD_CELL_BASIC(_name, _res, _pdata, _id) \ - MFD_CELL_ALL(_name, _res, _pdata, _id, NULL, NULL) \ + MFD_CELL_ALL(_name, MFD_ARRAY_SIZE((_res)), _res, \ + _pdata, _id, NULL, NULL) \ #define MFD_CELL_NAME(_name) \ - MFD_CELL_ALL(_name, NULL, NULL, 0, NULL, NULL) \ + MFD_CELL_ALL(_name, 0, NULL, NULL, 0, NULL, NULL) \ struct irq_domain; struct property_set; -- 1.9.1
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