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authorKees Cook <keescook@chromium.org>2018-06-12 14:03:40 -0700
committerKees Cook <keescook@chromium.org>2018-06-12 16:19:22 -0700
commit6396bb221514d2876fd6dc0aa2a1f240d99b37bb (patch)
treec5c501e859b93de096b1f01160135612ed765059 /drivers/clk
parent6da2ec56059c3c7a7e5f729e6349e74ace1e5c57 (diff)
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treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/renesas/clk-r8a7740.c2
-rw-r--r--drivers/clk/renesas/clk-r8a7779.c2
-rw-r--r--drivers/clk/renesas/clk-rcar-gen2.c2
-rw-r--r--drivers/clk/renesas/clk-rz.c2
-rw-r--r--drivers/clk/st/clkgen-fsyn.c2
-rw-r--r--drivers/clk/st/clkgen-pll.c2
-rw-r--r--drivers/clk/sunxi/clk-usb.c2
-rw-r--r--drivers/clk/tegra/clk.c7
-rw-r--r--drivers/clk/ti/apll.c2
-rw-r--r--drivers/clk/ti/divider.c4
-rw-r--r--drivers/clk/ti/dpll.c2
11 files changed, 15 insertions, 14 deletions
diff --git a/drivers/clk/renesas/clk-r8a7740.c b/drivers/clk/renesas/clk-r8a7740.c
index d074f8e982d0..a7a30d2eca41 100644
--- a/drivers/clk/renesas/clk-r8a7740.c
+++ b/drivers/clk/renesas/clk-r8a7740.c
@@ -161,7 +161,7 @@ static void __init r8a7740_cpg_clocks_init(struct device_node *np)
}
cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
- clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL);
+ clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL);
if (cpg == NULL || clks == NULL) {
/* We're leaking memory on purpose, there's no point in cleaning
* up as the system won't boot anyway.
diff --git a/drivers/clk/renesas/clk-r8a7779.c b/drivers/clk/renesas/clk-r8a7779.c
index 27fbfafaf2cd..5adcca4656c3 100644
--- a/drivers/clk/renesas/clk-r8a7779.c
+++ b/drivers/clk/renesas/clk-r8a7779.c
@@ -138,7 +138,7 @@ static void __init r8a7779_cpg_clocks_init(struct device_node *np)
}
cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
- clks = kzalloc(CPG_NUM_CLOCKS * sizeof(*clks), GFP_KERNEL);
+ clks = kcalloc(CPG_NUM_CLOCKS, sizeof(*clks), GFP_KERNEL);
if (cpg == NULL || clks == NULL) {
/* We're leaking memory on purpose, there's no point in cleaning
* up as the system won't boot anyway.
diff --git a/drivers/clk/renesas/clk-rcar-gen2.c b/drivers/clk/renesas/clk-rcar-gen2.c
index ee32a022e6da..bccd62f2cb09 100644
--- a/drivers/clk/renesas/clk-rcar-gen2.c
+++ b/drivers/clk/renesas/clk-rcar-gen2.c
@@ -417,7 +417,7 @@ static void __init rcar_gen2_cpg_clocks_init(struct device_node *np)
}
cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
- clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL);
+ clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL);
if (cpg == NULL || clks == NULL) {
/* We're leaking memory on purpose, there's no point in cleaning
* up as the system won't boot anyway.
diff --git a/drivers/clk/renesas/clk-rz.c b/drivers/clk/renesas/clk-rz.c
index 67dd712aa723..ac2f86d626b6 100644
--- a/drivers/clk/renesas/clk-rz.c
+++ b/drivers/clk/renesas/clk-rz.c
@@ -97,7 +97,7 @@ static void __init rz_cpg_clocks_init(struct device_node *np)
return;
cpg = kzalloc(sizeof(*cpg), GFP_KERNEL);
- clks = kzalloc(num_clks * sizeof(*clks), GFP_KERNEL);
+ clks = kcalloc(num_clks, sizeof(*clks), GFP_KERNEL);
BUG_ON(!cpg || !clks);
cpg->data.clks = clks;
diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index 14819d919df1..a79d81985c4e 100644
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -874,7 +874,7 @@ static void __init st_of_create_quadfs_fsynths(
return;
clk_data->clk_num = QUADFS_MAX_CHAN;
- clk_data->clks = kzalloc(QUADFS_MAX_CHAN * sizeof(struct clk *),
+ clk_data->clks = kcalloc(QUADFS_MAX_CHAN, sizeof(struct clk *),
GFP_KERNEL);
if (!clk_data->clks) {
diff --git a/drivers/clk/st/clkgen-pll.c b/drivers/clk/st/clkgen-pll.c
index 25bda48a5d35..7a7106dc80bf 100644
--- a/drivers/clk/st/clkgen-pll.c
+++ b/drivers/clk/st/clkgen-pll.c
@@ -738,7 +738,7 @@ static void __init clkgen_c32_pll_setup(struct device_node *np,
return;
clk_data->clk_num = num_odfs;
- clk_data->clks = kzalloc(clk_data->clk_num * sizeof(struct clk *),
+ clk_data->clks = kcalloc(clk_data->clk_num, sizeof(struct clk *),
GFP_KERNEL);
if (!clk_data->clks)
diff --git a/drivers/clk/sunxi/clk-usb.c b/drivers/clk/sunxi/clk-usb.c
index fe0c3d169377..917fc27a33dd 100644
--- a/drivers/clk/sunxi/clk-usb.c
+++ b/drivers/clk/sunxi/clk-usb.c
@@ -122,7 +122,7 @@ static void __init sunxi_usb_clk_setup(struct device_node *node,
if (!clk_data)
return;
- clk_data->clks = kzalloc((qty+1) * sizeof(struct clk *), GFP_KERNEL);
+ clk_data->clks = kcalloc(qty + 1, sizeof(struct clk *), GFP_KERNEL);
if (!clk_data->clks) {
kfree(clk_data);
return;
diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
index 593d76a114f9..ffaf17f71860 100644
--- a/drivers/clk/tegra/clk.c
+++ b/drivers/clk/tegra/clk.c
@@ -216,14 +216,15 @@ struct clk ** __init tegra_clk_init(void __iomem *regs, int num, int banks)
if (WARN_ON(banks > ARRAY_SIZE(periph_regs)))
return NULL;
- periph_clk_enb_refcnt = kzalloc(32 * banks *
- sizeof(*periph_clk_enb_refcnt), GFP_KERNEL);
+ periph_clk_enb_refcnt = kcalloc(32 * banks,
+ sizeof(*periph_clk_enb_refcnt),
+ GFP_KERNEL);
if (!periph_clk_enb_refcnt)
return NULL;
periph_banks = banks;
- clks = kzalloc(num * sizeof(struct clk *), GFP_KERNEL);
+ clks = kcalloc(num, sizeof(struct clk *), GFP_KERNEL);
if (!clks)
kfree(periph_clk_enb_refcnt);
diff --git a/drivers/clk/ti/apll.c b/drivers/clk/ti/apll.c
index 9498e9363b57..61c126a5d26a 100644
--- a/drivers/clk/ti/apll.c
+++ b/drivers/clk/ti/apll.c
@@ -206,7 +206,7 @@ static void __init of_dra7_apll_setup(struct device_node *node)
goto cleanup;
}
- parent_names = kzalloc(sizeof(char *) * init->num_parents, GFP_KERNEL);
+ parent_names = kcalloc(init->num_parents, sizeof(char *), GFP_KERNEL);
if (!parent_names)
goto cleanup;
diff --git a/drivers/clk/ti/divider.c b/drivers/clk/ti/divider.c
index aaa277dd6d99..ccfb4d9a152a 100644
--- a/drivers/clk/ti/divider.c
+++ b/drivers/clk/ti/divider.c
@@ -366,7 +366,7 @@ int ti_clk_parse_divider_data(int *div_table, int num_dividers, int max_div,
num_dividers = i;
- tmp = kzalloc(sizeof(*tmp) * (valid_div + 1), GFP_KERNEL);
+ tmp = kcalloc(valid_div + 1, sizeof(*tmp), GFP_KERNEL);
if (!tmp)
return -ENOMEM;
@@ -496,7 +496,7 @@ __init ti_clk_get_div_table(struct device_node *node)
return ERR_PTR(-EINVAL);
}
- table = kzalloc(sizeof(*table) * (valid_div + 1), GFP_KERNEL);
+ table = kcalloc(valid_div + 1, sizeof(*table), GFP_KERNEL);
if (!table)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/clk/ti/dpll.c b/drivers/clk/ti/dpll.c
index 7d33ca9042cb..dc86d07d0921 100644
--- a/drivers/clk/ti/dpll.c
+++ b/drivers/clk/ti/dpll.c
@@ -309,7 +309,7 @@ static void __init of_ti_dpll_setup(struct device_node *node,
goto cleanup;
}
- parent_names = kzalloc(sizeof(char *) * init->num_parents, GFP_KERNEL);
+ parent_names = kcalloc(init->num_parents, sizeof(char *), GFP_KERNEL);
if (!parent_names)
goto cleanup;