From 4360fa22ad5b48a1d1e10e31ffb383ed8c977435 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 6 Jun 2016 11:02:03 +0200 Subject: [PATCH] drivers: misc: ti-st: Use int instead of fuzzy char for callback status On mips and parisc: drivers/bluetooth/btwilink.c: In function 'ti_st_open': drivers/bluetooth/btwilink.c:174:21: warning: overflow in implicit constant conversion [-Woverflow] hst->reg_status = -EINPROGRESS; drivers/nfc/nfcwilink.c: In function 'nfcwilink_open': drivers/nfc/nfcwilink.c:396:31: warning: overflow in implicit constant conversion [-Woverflow] drv->st_register_cb_status = -EINPROGRESS; There are actually two issues: 1. Whether "char" is signed or unsigned depends on the architecture. As the completion callback data is used to pass a (negative) error code, it should always be signed. 2. EINPROGRESS is 150 on mips, 245 on parisc. Hence -EINPROGRESS doesn't fit in a signed 8-bit number. Change the callback status from "char" to "int" to fix these. Signed-off-by: Geert Uytterhoeven Acked-by: Mauro Carvalho Chehab Acked-by: Samuel Ortiz Signed-off-by: Marcel Holtmann --- drivers/bluetooth/btwilink.c | 4 ++-- drivers/media/radio/wl128x/fmdrv_common.c | 2 +- drivers/misc/ti-st/st_core.c | 2 +- drivers/nfc/nfcwilink.c | 4 ++-- include/linux/ti_wilink_st.h | 2 +- 5 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c index 24a652f..485281b 100644 --- a/drivers/bluetooth/btwilink.c +++ b/drivers/bluetooth/btwilink.c @@ -51,7 +51,7 @@ */ struct ti_st { struct hci_dev *hdev; - char reg_status; + int reg_status; long (*st_write) (struct sk_buff *); struct completion wait_reg_completion; }; @@ -83,7 +83,7 @@ static inline void ti_st_tx_complete(struct ti_st *hst, int pkt_type) * status.ti_st_open() function will wait for signal from this * API when st_register() function returns ST_PENDING. */ -static void st_reg_completion_cb(void *priv_data, char data) +static void st_reg_completion_cb(void *priv_data, int data) { struct ti_st *lhst = priv_data; diff --git a/drivers/media/radio/wl128x/fmdrv_common.c b/drivers/media/radio/wl128x/fmdrv_common.c index 3f9e6df..642b89c 100644 --- a/drivers/media/radio/wl128x/fmdrv_common.c +++ b/drivers/media/radio/wl128x/fmdrv_common.c @@ -1472,7 +1472,7 @@ static long fm_st_receive(void *arg, struct sk_buff *skb) * Called by ST layer to indicate protocol registration completion * status. */ -static void fm_st_reg_comp_cb(void *arg, char data) +static void fm_st_reg_comp_cb(void *arg, int data) { struct fmdev *fmdev; diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c index dcdbd58..0005159 100644 --- a/drivers/misc/ti-st/st_core.c +++ b/drivers/misc/ti-st/st_core.c @@ -141,7 +141,7 @@ static void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata) * This function is being called with spin lock held, protocol drivers are * only expected to complete their waits and do nothing more than that. */ -static void st_reg_complete(struct st_data_s *st_gdata, char err) +static void st_reg_complete(struct st_data_s *st_gdata, int err) { unsigned char i = 0; pr_info(" %s ", __func__); diff --git a/drivers/nfc/nfcwilink.c b/drivers/nfc/nfcwilink.c index f81e500..3fbd18b 100644 --- a/drivers/nfc/nfcwilink.c +++ b/drivers/nfc/nfcwilink.c @@ -94,7 +94,7 @@ struct nfcwilink { struct nci_dev *ndev; unsigned long flags; - char st_register_cb_status; + int st_register_cb_status; long (*st_write) (struct sk_buff *); struct completion completed; @@ -320,7 +320,7 @@ exit: } /* Called by ST when registration is complete */ -static void nfcwilink_register_complete(void *priv_data, char data) +static void nfcwilink_register_complete(void *priv_data, int data) { struct nfcwilink *drv = priv_data; diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h index 0a0d568..f229302 100644 --- a/include/linux/ti_wilink_st.h +++ b/include/linux/ti_wilink_st.h @@ -71,7 +71,7 @@ struct st_proto_s { enum proto_type type; long (*recv) (void *, struct sk_buff *); unsigned char (*match_packet) (const unsigned char *data); - void (*reg_complete_cb) (void *, char data); + void (*reg_complete_cb) (void *, int data); long (*write) (struct sk_buff *skb); void *priv_data; -- 2.7.4