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Date: Tue, 8 Aug 2023 07:40:42 +0000
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: Herve Codina <herve.codina@...tlin.com>, "David S. Miller"
<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Andrew Lunn
<andrew@...n.ch>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski
<krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, Lee
Jones <lee@...nel.org>, Linus Walleij <linus.walleij@...aro.org>, Qiang Zhao
<qiang.zhao@....com>, Li Yang <leoyang.li@....com>, Liam Girdwood
<lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, Jaroslav Kysela
<perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, Shengjiu Wang
<shengjiu.wang@...il.com>, Xiubo Li <Xiubo.Lee@...il.com>, Fabio Estevam
<festevam@...il.com>, Nicolin Chen <nicoleotsuka@...il.com>, Randy Dunlap
<rdunlap@...radead.org>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>, "alsa-devel@...a-project.org"
<alsa-devel@...a-project.org>, Thomas Petazzoni
<thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v2 02/28] soc: fsl: cpm1: qmc: Fix __iomem addresses
declaration
Le 26/07/2023 à 17:01, Herve Codina a écrit :
> Running sparse (make C=1) on qmc.c raises a lot of warning such as:
> ...
> warning: incorrect type in assignment (different address spaces)
> expected struct cpm_buf_desc [usertype] *[noderef] __iomem bd
> got struct cpm_buf_desc [noderef] [usertype] __iomem *txbd_free
> ...
>
> Indeed, some variable were declared 'type *__iomem var' instead of
> 'type __iomem *var'.
>
> Use the correct declaration to remove these warnings.
>
> Fixes: 3178d58e0b97 ("soc: fsl: cpm1: Add support for QMC")
> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>
> ---
> drivers/soc/fsl/qe/qmc.c | 34 +++++++++++++++++-----------------
> 1 file changed, 17 insertions(+), 17 deletions(-)
>
> diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c
> index b3c292c9a14e..7ad0d77f1740 100644
> --- a/drivers/soc/fsl/qe/qmc.c
> +++ b/drivers/soc/fsl/qe/qmc.c
> @@ -175,7 +175,7 @@ struct qmc_chan {
> struct list_head list;
> unsigned int id;
> struct qmc *qmc;
> - void *__iomem s_param;
> + void __iomem *s_param;
> enum qmc_mode mode;
> u64 tx_ts_mask;
> u64 rx_ts_mask;
> @@ -203,9 +203,9 @@ struct qmc_chan {
> struct qmc {
> struct device *dev;
> struct tsa_serial *tsa_serial;
> - void *__iomem scc_regs;
> - void *__iomem scc_pram;
> - void *__iomem dpram;
> + void __iomem *scc_regs;
> + void __iomem *scc_pram;
> + void __iomem *dpram;
> u16 scc_pram_offset;
> cbd_t __iomem *bd_table;
> dma_addr_t bd_dma_addr;
> @@ -218,37 +218,37 @@ struct qmc {
> struct qmc_chan *chans[64];
> };
>
> -static inline void qmc_write16(void *__iomem addr, u16 val)
> +static inline void qmc_write16(void __iomem *addr, u16 val)
> {
> iowrite16be(val, addr);
> }
>
> -static inline u16 qmc_read16(void *__iomem addr)
> +static inline u16 qmc_read16(void __iomem *addr)
> {
> return ioread16be(addr);
> }
>
> -static inline void qmc_setbits16(void *__iomem addr, u16 set)
> +static inline void qmc_setbits16(void __iomem *addr, u16 set)
> {
> qmc_write16(addr, qmc_read16(addr) | set);
> }
>
> -static inline void qmc_clrbits16(void *__iomem addr, u16 clr)
> +static inline void qmc_clrbits16(void __iomem *addr, u16 clr)
> {
> qmc_write16(addr, qmc_read16(addr) & ~clr);
> }
>
> -static inline void qmc_write32(void *__iomem addr, u32 val)
> +static inline void qmc_write32(void __iomem *addr, u32 val)
> {
> iowrite32be(val, addr);
> }
>
> -static inline u32 qmc_read32(void *__iomem addr)
> +static inline u32 qmc_read32(void __iomem *addr)
> {
> return ioread32be(addr);
> }
>
> -static inline void qmc_setbits32(void *__iomem addr, u32 set)
> +static inline void qmc_setbits32(void __iomem *addr, u32 set)
> {
> qmc_write32(addr, qmc_read32(addr) | set);
> }
> @@ -318,7 +318,7 @@ int qmc_chan_write_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
> {
> struct qmc_xfer_desc *xfer_desc;
> unsigned long flags;
> - cbd_t *__iomem bd;
> + cbd_t __iomem *bd;
> u16 ctrl;
> int ret;
>
> @@ -374,7 +374,7 @@ static void qmc_chan_write_done(struct qmc_chan *chan)
> void (*complete)(void *context);
> unsigned long flags;
> void *context;
> - cbd_t *__iomem bd;
> + cbd_t __iomem *bd;
> u16 ctrl;
>
> /*
> @@ -425,7 +425,7 @@ int qmc_chan_read_submit(struct qmc_chan *chan, dma_addr_t addr, size_t length,
> {
> struct qmc_xfer_desc *xfer_desc;
> unsigned long flags;
> - cbd_t *__iomem bd;
> + cbd_t __iomem *bd;
> u16 ctrl;
> int ret;
>
> @@ -488,7 +488,7 @@ static void qmc_chan_read_done(struct qmc_chan *chan)
> void (*complete)(void *context, size_t size);
> struct qmc_xfer_desc *xfer_desc;
> unsigned long flags;
> - cbd_t *__iomem bd;
> + cbd_t __iomem *bd;
> void *context;
> u16 datalen;
> u16 ctrl;
> @@ -663,7 +663,7 @@ static void qmc_chan_reset_rx(struct qmc_chan *chan)
> {
> struct qmc_xfer_desc *xfer_desc;
> unsigned long flags;
> - cbd_t *__iomem bd;
> + cbd_t __iomem *bd;
> u16 ctrl;
>
> spin_lock_irqsave(&chan->rx_lock, flags);
> @@ -694,7 +694,7 @@ static void qmc_chan_reset_tx(struct qmc_chan *chan)
> {
> struct qmc_xfer_desc *xfer_desc;
> unsigned long flags;
> - cbd_t *__iomem bd;
> + cbd_t __iomem *bd;
> u16 ctrl;
>
> spin_lock_irqsave(&chan->tx_lock, flags);
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