Messages in this thread Patch in this message | | | Subject | [PATCH -next v2] media: tuners: reduce stack usage in mxl5005s_reconfigure | From | Bixuan Cui <> | Date | Thu, 16 Jul 2020 21:48:47 +0800 |
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Fix the warning: [-Werror=-Wframe-larger-than=]
drivers/media/tuners/mxl5005s.c: In function 'mxl5005s_reconfigure': drivers/media/tuners/mxl5005s.c:3953:1: warning: the frame size of 1152 bytes is larger than 1024 bytes
Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> --- drivers/media/tuners/mxl5005s.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-)
diff --git a/drivers/media/tuners/mxl5005s.c b/drivers/media/tuners/mxl5005s.c index 1c07e2225fb3..f6e82a8e7d37 100644 --- a/drivers/media/tuners/mxl5005s.c +++ b/drivers/media/tuners/mxl5005s.c @@ -3926,15 +3926,26 @@ static int mxl5005s_reconfigure(struct dvb_frontend *fe, u32 mod_type, u32 bandwidth) { struct mxl5005s_state *state = fe->tuner_priv; - - u8 AddrTable[MXL5005S_REG_WRITING_TABLE_LEN_MAX]; - u8 ByteTable[MXL5005S_REG_WRITING_TABLE_LEN_MAX]; + u8 *AddrTable; + u8 *ByteTable; int TableLen;
dprintk(1, "%s(type=%d, bw=%d)\n", __func__, mod_type, bandwidth);
mxl5005s_reset(fe);
+ AddrTable = kcalloc(MXL5005S_REG_WRITING_TABLE_LEN_MAX, sizeof(u8), + GFP_KERNEL); + if (!AddrTable) + return -ENOMEM; + + ByteTable = kcalloc(MXL5005S_REG_WRITING_TABLE_LEN_MAX, sizeof(u8), + GFP_KERNEL); + if (!ByteTable) { + kfree(AddrTable); + return -ENOMEM; + } + /* Tuner initialization stage 0 */ MXL_GetMasterControl(ByteTable, MC_SYNTH_RESET); AddrTable[0] = MASTER_CONTROL_ADDR; @@ -3949,6 +3960,9 @@ static int mxl5005s_reconfigure(struct dvb_frontend *fe, u32 mod_type,
mxl5005s_writeregs(fe, AddrTable, ByteTable, TableLen);
+ kfree(AddrTable); + kfree(ByteTable); + return 0; }
-- 2.17.1
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